From patchwork Sat Jan 29 12:17:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729500 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 17F08C433FE for ; Sat, 29 Jan 2022 12:18:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=uAOsVSBMug6eI5LvEH/UCKOY0JYI0BCHYu8+2upCqw8=; b=DaGrqrMwtwwYHa YQX1dbSnHvSF8pU8oVlJWtkb6Iw/QnV4oBVLOYRHABza1TAXOJkLVknNDKIda7qosBRQWKmnG29es zVO8OOrrzeupZwrYBO+V6HXxpuQHrMkM942JetPHYiPxvUO6NbhrlTGC27SPf3ggfjRcRjlA7+AkF zE41gVpEk/SgtLwKRSFqaAhWHaBDde7nHdg/EgN7VMVW7hzmBQfpWSydLaAkZZEV9h95Xu3eihIab SYZcaJpG4HCnEviYRO8DNY0ozIgCAoYNQogNKn6VWbEo9X5N+l/NS7co8t68qTn+i6maYzBLz1dsH nW6ggBHmaTL5TE439VFQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmgJ-004bwI-FJ; Sat, 29 Jan 2022 12:18:15 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmfx-004bqB-MB; Sat, 29 Jan 2022 12:17:58 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 29AC160C01; Sat, 29 Jan 2022 12:17:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2AA66C340EB; Sat, 29 Jan 2022 12:17:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458673; bh=6IondqNnF0+rYtTuvXK//nvkzK2tbYTXjbPM2pqSrHg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H+4/RP5jdnejAq1c8O7KNyW3kEX6oNykJpAJcahrHfJJHGeOJ3X/sD//2QoThSJ1K caS4s5ALljGR1H1v1HrQvfI/pMT5rjlUQdw+hVShGGYn5vNJXOUCOWTFMZhRM6TRUw xUFimg9IECguUj7NwjBaPqxjZYYfki2QVDR+ZdkB41Ea4CmaL7CpnscHzPlJsivZi5 aYzNiHFENP4AGjn1bH7rT9G4JtMe8Hbrh1GpGL5q+bl/7SDRMDHwZfzOrNIWIcYtm7 RvlPHgcGVuLo1DK5RaXy6DtxEkANstnwhOnotCLoogUtJ/wg9OATmfuHDgak4qJ/3F aCszQKSojQsIw== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 01/17] kconfig: Add SYSVIPC_COMPAT for all architectures Date: Sat, 29 Jan 2022 20:17:12 +0800 Message-Id: <20220129121728.1079364-2-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041753_835857_0489CB80 X-CRM114-Status: GOOD ( 13.00 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren The existing per-arch definitions are pretty much historic cruft. Move SYSVIPC_COMPAT into init/Kconfig. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Acked-by: Arnd Bergmann Cc: Christoph Hellwig Cc: Palmer Dabbelt Reviewed-by: Christoph Hellwig --- arch/arm64/Kconfig | 4 ---- arch/mips/Kconfig | 5 ----- arch/parisc/Kconfig | 4 ---- arch/powerpc/Kconfig | 5 ----- arch/s390/Kconfig | 3 --- arch/sparc/Kconfig | 5 ----- arch/x86/Kconfig | 4 ---- init/Kconfig | 4 ++++ 8 files changed, 4 insertions(+), 30 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6978140edfa4..ad1beb70dc36 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -2022,10 +2022,6 @@ config DMI endmenu -config SYSVIPC_COMPAT - def_bool y - depends on COMPAT && SYSVIPC - menu "Power management options" source "kernel/power/Kconfig" diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 058446f01487..91a17ad380c9 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -3170,16 +3170,12 @@ config MIPS32_COMPAT config COMPAT bool -config SYSVIPC_COMPAT - bool - config MIPS32_O32 bool "Kernel support for o32 binaries" depends on 64BIT select ARCH_WANT_OLD_COMPAT_IPC select COMPAT select MIPS32_COMPAT - select SYSVIPC_COMPAT if SYSVIPC help Select this option if you want to run o32 binaries. These are pure 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of @@ -3193,7 +3189,6 @@ config MIPS32_N32 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION select COMPAT select MIPS32_COMPAT - select SYSVIPC_COMPAT if SYSVIPC help Select this option if you want to run n32 binaries. These are 64-bit binaries using 32-bit quantities for addressing and certain diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 43c1c880def6..bc56759d44a2 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -345,10 +345,6 @@ config COMPAT def_bool y depends on 64BIT -config SYSVIPC_COMPAT - def_bool y - depends on COMPAT && SYSVIPC - config AUDIT_ARCH def_bool y diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b779603978e1..5a32b7f21af2 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -291,11 +291,6 @@ config COMPAT select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION -config SYSVIPC_COMPAT - bool - depends on COMPAT && SYSVIPC - default y - config SCHED_OMIT_FRAME_POINTER bool default y diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 9750f92380f5..e41265c938ec 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -459,9 +459,6 @@ config COMPAT (and some other stuff like libraries and such) is needed for executing 31 bit applications. It is safe to say "Y". -config SYSVIPC_COMPAT - def_bool y if COMPAT && SYSVIPC - config SMP def_bool y diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 1cab1b284f1a..15d5725bd623 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -488,9 +488,4 @@ config COMPAT select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION -config SYSVIPC_COMPAT - bool - depends on COMPAT && SYSVIPC - default y - source "drivers/sbus/char/Kconfig" diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index ebe8fc76949a..9609f191719d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2859,10 +2859,6 @@ config COMPAT if COMPAT config COMPAT_FOR_U64_ALIGNMENT def_bool y - -config SYSVIPC_COMPAT - def_bool y - depends on SYSVIPC endif endmenu diff --git a/init/Kconfig b/init/Kconfig index e9119bf54b1f..589ccec56571 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -386,6 +386,10 @@ config SYSVIPC_SYSCTL depends on SYSCTL default y +config SYSVIPC_COMPAT + def_bool y + depends on COMPAT && SYSVIPC + config POSIX_MQUEUE bool "POSIX Message Queues" depends on NET From patchwork Sat Jan 29 12:17:13 2022 Content-Type: text/plain; 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Sat, 29 Jan 2022 12:17:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458679; bh=wcdNn9I8JZy3Jn2cpELP40HF9DF9IQSOPOhCqQoEm0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QcXhfIHAwMmNCOsrgWWrnTiy9h9XFsgtuDmDz9kNFWAIBu4jiIf19YdRjTUa51ZRg VfgkziwbCM3px7n4pDb4RAn3f/7kbFN5Ile0VW/f4Bb5DAtoAmmvpMcZ9W5VG5HnKB Zx0RQFZzOllSVklD7NuhopFKnVDivp3M4h0IKJRwVw+3t5eregWhkjiEQqAo7sMSvf CCJjywMdVPfHjs/INTsaQfrbb32yMVEbCiHUPcyDVG9d2mcaS5+eanWIofmk8Prefa G4S68KBsp90SABvvEsulZoMIpGDUOu9HR30Ozyb4oHPkDT51KazNyCH5cqMrkkETBk c6ndr/9/GKr0A== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 02/17] fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT Date: Sat, 29 Jan 2022 20:17:13 +0800 Message-Id: <20220129121728.1079364-3-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041800_649841_9F070344 X-CRM114-Status: GOOD ( 10.84 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren RISC-V doesn't neeed compat_stat, so using __ARCH_WANT_COMPAT_STAT to exclude unnecessary SYSCALL functions. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann Cc: Palmer Dabbelt Reviewed-by: Christoph Hellwig --- arch/arm64/include/asm/unistd.h | 1 + arch/mips/include/asm/unistd.h | 2 ++ arch/parisc/include/asm/unistd.h | 1 + arch/powerpc/include/asm/unistd.h | 1 + arch/s390/include/asm/unistd.h | 1 + arch/sparc/include/asm/unistd.h | 1 + arch/x86/include/asm/unistd.h | 1 + fs/stat.c | 2 +- 8 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index 4e65da3445c7..037feba03a51 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -3,6 +3,7 @@ * Copyright (C) 2012 ARM Ltd. */ #ifdef CONFIG_COMPAT +#define __ARCH_WANT_COMPAT_STAT #define __ARCH_WANT_COMPAT_STAT64 #define __ARCH_WANT_SYS_GETHOSTNAME #define __ARCH_WANT_SYS_PAUSE diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h index c2196b1b6604..25a5253db7f4 100644 --- a/arch/mips/include/asm/unistd.h +++ b/arch/mips/include/asm/unistd.h @@ -50,6 +50,8 @@ # ifdef CONFIG_32BIT # define __ARCH_WANT_STAT64 # define __ARCH_WANT_SYS_TIME32 +# else +# define __ARCH_WANT_COMPAT_STAT # endif # ifdef CONFIG_MIPS32_O32 # define __ARCH_WANT_SYS_TIME32 diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h index cd438e4150f6..14e0668184cb 100644 --- a/arch/parisc/include/asm/unistd.h +++ b/arch/parisc/include/asm/unistd.h @@ -168,6 +168,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \ #define __ARCH_WANT_SYS_CLONE #define __ARCH_WANT_SYS_CLONE3 #define __ARCH_WANT_COMPAT_SYS_SENDFILE +#define __ARCH_WANT_COMPAT_STAT #ifdef CONFIG_64BIT #define __ARCH_WANT_SYS_TIME diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index 5eb462af6766..b1129b4ef57d 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -44,6 +44,7 @@ #define __ARCH_WANT_SYS_TIME #define __ARCH_WANT_SYS_UTIME #define __ARCH_WANT_SYS_NEWFSTATAT +#define __ARCH_WANT_COMPAT_STAT #define __ARCH_WANT_COMPAT_SYS_SENDFILE #endif #define __ARCH_WANT_SYS_FORK diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h index 9e9f75ef046a..4260bc5ce7f8 100644 --- a/arch/s390/include/asm/unistd.h +++ b/arch/s390/include/asm/unistd.h @@ -28,6 +28,7 @@ #define __ARCH_WANT_SYS_SIGPENDING #define __ARCH_WANT_SYS_SIGPROCMASK # ifdef CONFIG_COMPAT +# define __ARCH_WANT_COMPAT_STAT # define __ARCH_WANT_SYS_TIME32 # define __ARCH_WANT_SYS_UTIME32 # endif diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index 1e66278ba4a5..d6bc76706a7a 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -46,6 +46,7 @@ #define __ARCH_WANT_SYS_TIME #define __ARCH_WANT_SYS_UTIME #define __ARCH_WANT_COMPAT_SYS_SENDFILE +#define __ARCH_WANT_COMPAT_STAT #endif #ifdef __32bit_syscall_numbers__ diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h index 80e9d5206a71..761173ccc33c 100644 --- a/arch/x86/include/asm/unistd.h +++ b/arch/x86/include/asm/unistd.h @@ -22,6 +22,7 @@ # include # define __ARCH_WANT_SYS_TIME # define __ARCH_WANT_SYS_UTIME +# define __ARCH_WANT_COMPAT_STAT # define __ARCH_WANT_COMPAT_SYS_PREADV64 # define __ARCH_WANT_COMPAT_SYS_PWRITEV64 # define __ARCH_WANT_COMPAT_SYS_PREADV64V2 diff --git a/fs/stat.c b/fs/stat.c index 28d2020ba1f4..ffdeb9065d53 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -639,7 +639,7 @@ SYSCALL_DEFINE5(statx, return do_statx(dfd, filename, flags, mask, buffer); } -#ifdef CONFIG_COMPAT +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_STAT) static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf) { struct compat_stat tmp; From patchwork Sat Jan 29 12:17:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729503 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D32CAC433EF for ; Sat, 29 Jan 2022 12:19:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Sat, 29 Jan 2022 12:18:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E93DFC340EB; Sat, 29 Jan 2022 12:17:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458686; bh=hiRTpbhZ1pV2L7nJl0o5VwYU6mEKbuaUuNhjrjpmCeY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r7Kp2FRsVwq60k/NGeLjIGlLDCUkq6se9kBgr6aAO/MchaKDI0FqnmMqBLE7dC9BS Ipxwgba9HBHNIy7D8cTsMGtHaJ+a5jTAj3LWopo7SLvLgTjTz/F+tlI1IAJTl9XoKW lJ9+anwNJfCE3W2LuO9H3Xl7rWU8P2m16xrIIsMpv+LrEU4xSNFo6v2F0As0R18Ab5 iu7SYwxYKpX1swUboIRjtaCM/kUcXq/xtcp0KJ4pYByMWq6PT7aG3cEIXeopW1YQTI lGHj1cfOohjgRO1E1iGR5pb3BRYg1BCgdJGbFwk9rQmn/NsE2sCq/T1A1tHBou149r SFFLH4sYW32hA== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 03/17] asm-generic: compat: Cleanup duplicate definitions Date: Sat, 29 Jan 2022 20:17:14 +0800 Message-Id: <20220129121728.1079364-4-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041808_760266_778A0370 X-CRM114-Status: GOOD ( 14.24 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren There are 7 64bit architectures that support Linux COMPAT mode to run 32bit applications. A lot of definitions are duplicate: - COMPAT_USER_HZ - COMPAT_RLIM_INFINITY - COMPAT_OFF_T_MAX - __compat_uid_t, __compat_uid_t - compat_dev_t - compat_ipc_pid_t - struct compat_flock - struct compat_flock64 - struct compat_statfs - struct compat_ipc64_perm, compat_semid64_ds, compat_msqid64_ds, compat_shmid64_ds Cleanup duplicate definitions and merge them into asm-generic. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Palmer Dabbelt Reviewed-by: Arnd Bergmann --- arch/arm64/include/asm/compat.h | 106 ++----------------------- arch/mips/include/asm/compat.h | 27 ++----- arch/parisc/include/asm/compat.h | 45 ++--------- arch/powerpc/include/asm/compat.h | 46 ++--------- arch/s390/include/asm/compat.h | 95 +++------------------- arch/sparc/include/asm/compat.h | 42 ++++------ arch/x86/include/asm/compat.h | 89 +++------------------ include/asm-generic/compat.h | 126 ++++++++++++++++++++++++++++++ 8 files changed, 193 insertions(+), 383 deletions(-) diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index eaa6ca062d89..5b911f3625e8 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -8,6 +8,13 @@ #define compat_mode_t compat_mode_t typedef u16 compat_mode_t; +#define __compat_uid_t __compat_uid_t +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; + +#define compat_ipc_pid_t compat_ipc_pid_t +typedef u16 compat_ipc_pid_t; + #include #ifdef CONFIG_COMPAT @@ -19,21 +26,15 @@ typedef u16 compat_mode_t; #include #include -#define COMPAT_USER_HZ 100 #ifdef __AARCH64EB__ #define COMPAT_UTS_MACHINE "armv8b\0\0" #else #define COMPAT_UTS_MACHINE "armv8l\0\0" #endif -typedef u16 __compat_uid_t; -typedef u16 __compat_gid_t; typedef u16 __compat_uid16_t; typedef u16 __compat_gid16_t; -typedef u32 compat_dev_t; typedef s32 compat_nlink_t; -typedef u16 compat_ipc_pid_t; -typedef __kernel_fsid_t compat_fsid_t; struct compat_stat { #ifdef __AARCH64EB__ @@ -65,106 +66,13 @@ struct compat_stat { compat_ulong_t __unused4[2]; }; -struct compat_flock { - short l_type; - short l_whence; - compat_off_t l_start; - compat_off_t l_len; - compat_pid_t l_pid; -}; - #define F_GETLK64 12 /* using 'struct flock64' */ #define F_SETLK64 13 #define F_SETLKW64 14 -struct compat_flock64 { - short l_type; - short l_whence; - compat_loff_t l_start; - compat_loff_t l_len; - compat_pid_t l_pid; -}; - -struct compat_statfs { - int f_type; - int f_bsize; - int f_blocks; - int f_bfree; - int f_bavail; - int f_files; - int f_ffree; - compat_fsid_t f_fsid; - int f_namelen; /* SunOS ignores this field. */ - int f_frsize; - int f_flags; - int f_spare[4]; -}; - -#define COMPAT_RLIM_INFINITY 0xffffffff - -#define COMPAT_OFF_T_MAX 0x7fffffff - #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) #define COMPAT_MINSIGSTKSZ 2048 -struct compat_ipc64_perm { - compat_key_t key; - __compat_uid32_t uid; - __compat_gid32_t gid; - __compat_uid32_t cuid; - __compat_gid32_t cgid; - unsigned short mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - compat_ulong_t unused1; - compat_ulong_t unused2; -}; - -struct compat_semid64_ds { - struct compat_ipc64_perm sem_perm; - compat_ulong_t sem_otime; - compat_ulong_t sem_otime_high; - compat_ulong_t sem_ctime; - compat_ulong_t sem_ctime_high; - compat_ulong_t sem_nsems; - compat_ulong_t __unused3; - compat_ulong_t __unused4; -}; - -struct compat_msqid64_ds { - struct compat_ipc64_perm msg_perm; - compat_ulong_t msg_stime; - compat_ulong_t msg_stime_high; - compat_ulong_t msg_rtime; - compat_ulong_t msg_rtime_high; - compat_ulong_t msg_ctime; - compat_ulong_t msg_ctime_high; - compat_ulong_t msg_cbytes; - compat_ulong_t msg_qnum; - compat_ulong_t msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - compat_ulong_t __unused4; - compat_ulong_t __unused5; -}; - -struct compat_shmid64_ds { - struct compat_ipc64_perm shm_perm; - compat_size_t shm_segsz; - compat_ulong_t shm_atime; - compat_ulong_t shm_atime_high; - compat_ulong_t shm_dtime; - compat_ulong_t shm_dtime_high; - compat_ulong_t shm_ctime; - compat_ulong_t shm_ctime_high; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - compat_ulong_t shm_nattch; - compat_ulong_t __unused4; - compat_ulong_t __unused5; -}; - static inline int is_compat_task(void) { return test_thread_flag(TIF_32BIT); diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h index bbb3bc5a42fd..ceab66ba052b 100644 --- a/arch/mips/include/asm/compat.h +++ b/arch/mips/include/asm/compat.h @@ -9,28 +9,29 @@ #include #include +#define __compat_uid_t __compat_uid_t typedef s32 __compat_uid_t; typedef s32 __compat_gid_t; + typedef __compat_uid_t __compat_uid32_t; typedef __compat_gid_t __compat_gid32_t; #define __compat_uid32_t __compat_uid32_t -#define __compat_gid32_t __compat_gid32_t + +#define compat_flock compat_flock +#define compat_statfs compat_statfs +#define compat_ipc64_perm compat_ipc64_perm #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ #define _COMPAT_NSIG_BPW 32 typedef u32 compat_sigset_word; +#define COMPAT_RLIM_INFINITY 0x7fffffffUL + #include -#define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "mips\0\0\0" -typedef u32 compat_dev_t; typedef u32 compat_nlink_t; -typedef s32 compat_ipc_pid_t; -typedef struct { - s32 val[2]; -} compat_fsid_t; struct compat_stat { compat_dev_t st_dev; @@ -69,14 +70,6 @@ struct compat_flock { #define F_SETLK64 34 #define F_SETLKW64 35 -struct compat_flock64 { - short l_type; - short l_whence; - compat_loff_t l_start; - compat_loff_t l_len; - compat_pid_t l_pid; -}; - struct compat_statfs { int f_type; int f_bsize; @@ -92,10 +85,6 @@ struct compat_statfs { int f_spare[5]; }; -#define COMPAT_RLIM_INFINITY 0x7fffffffUL - -#define COMPAT_OFF_T_MAX 0x7fffffff - struct compat_ipc64_perm { compat_key_t key; __compat_uid32_t uid; diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h index c04f5a637c39..339d1b833fa7 100644 --- a/arch/parisc/include/asm/compat.h +++ b/arch/parisc/include/asm/compat.h @@ -11,16 +11,16 @@ #define compat_mode_t compat_mode_t typedef u16 compat_mode_t; +#define compat_ipc_pid_t compat_ipc_pid_t +typedef u16 compat_ipc_pid_t; + +#define compat_ipc64_perm compat_ipc64_perm + #include -#define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "parisc\0\0" -typedef u32 __compat_uid_t; -typedef u32 __compat_gid_t; -typedef u32 compat_dev_t; typedef u16 compat_nlink_t; -typedef u16 compat_ipc_pid_t; struct compat_stat { compat_dev_t st_dev; /* dev_t is 32 bits on parisc */ @@ -53,37 +53,6 @@ struct compat_stat { u32 st_spare4[3]; }; -struct compat_flock { - short l_type; - short l_whence; - compat_off_t l_start; - compat_off_t l_len; - compat_pid_t l_pid; -}; - -struct compat_flock64 { - short l_type; - short l_whence; - compat_loff_t l_start; - compat_loff_t l_len; - compat_pid_t l_pid; -}; - -struct compat_statfs { - s32 f_type; - s32 f_bsize; - s32 f_blocks; - s32 f_bfree; - s32 f_bavail; - s32 f_files; - s32 f_ffree; - __kernel_fsid_t f_fsid; - s32 f_namelen; - s32 f_frsize; - s32 f_flags; - s32 f_spare[4]; -}; - struct compat_sigcontext { compat_int_t sc_flags; compat_int_t sc_gr[32]; /* PSW in sc_gr[0] */ @@ -93,10 +62,6 @@ struct compat_sigcontext { compat_int_t sc_sar; /* cr11 */ }; -#define COMPAT_RLIM_INFINITY 0xffffffff - -#define COMPAT_OFF_T_MAX 0x7fffffff - struct compat_ipc64_perm { compat_key_t key; __compat_uid_t uid; diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h index 7afc96fb6524..a71d235bc5d7 100644 --- a/arch/powerpc/include/asm/compat.h +++ b/arch/powerpc/include/asm/compat.h @@ -8,21 +8,20 @@ #include #include +#define compat_ipc_pid_t compat_ipc_pid_t +typedef u16 compat_ipc_pid_t; + +#define compat_ipc64_perm compat_ipc64_perm + #include -#define COMPAT_USER_HZ 100 #ifdef __BIG_ENDIAN__ #define COMPAT_UTS_MACHINE "ppc\0\0" #else #define COMPAT_UTS_MACHINE "ppcle\0\0" #endif -typedef u32 __compat_uid_t; -typedef u32 __compat_gid_t; -typedef u32 compat_dev_t; typedef s16 compat_nlink_t; -typedef u16 compat_ipc_pid_t; -typedef __kernel_fsid_t compat_fsid_t; struct compat_stat { compat_dev_t st_dev; @@ -44,45 +43,10 @@ struct compat_stat { u32 __unused4[2]; }; -struct compat_flock { - short l_type; - short l_whence; - compat_off_t l_start; - compat_off_t l_len; - compat_pid_t l_pid; -}; - #define F_GETLK64 12 /* using 'struct flock64' */ #define F_SETLK64 13 #define F_SETLKW64 14 -struct compat_flock64 { - short l_type; - short l_whence; - compat_loff_t l_start; - compat_loff_t l_len; - compat_pid_t l_pid; -}; - -struct compat_statfs { - int f_type; - int f_bsize; - int f_blocks; - int f_bfree; - int f_bavail; - int f_files; - int f_ffree; - compat_fsid_t f_fsid; - int f_namelen; /* SunOS ignores this field. */ - int f_frsize; - int f_flags; - int f_spare[4]; -}; - -#define COMPAT_RLIM_INFINITY 0xffffffff - -#define COMPAT_OFF_T_MAX 0x7fffffff - /* * ipc64_perm is actually 32/64bit clean but since the compat layer refers to * it we may as well define it. diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h index cdc7ae72529d..028a79c2de00 100644 --- a/arch/s390/include/asm/compat.h +++ b/arch/s390/include/asm/compat.h @@ -12,6 +12,18 @@ #define compat_mode_t compat_mode_t typedef u16 compat_mode_t; +#define __compat_uid_t __compat_uid_t +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; + +#define compat_dev_t compat_dev_t +typedef u16 compat_dev_t; + +#define compat_ipc_pid_t compat_ipc_pid_t +typedef u16 compat_ipc_pid_t; + +#define compat_statfs compat_statfs + #include #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \ @@ -53,15 +65,9 @@ typedef u16 compat_mode_t; PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \ PSW32_ASC_PRIMARY) -#define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "s390\0\0\0\0" -typedef u16 __compat_uid_t; -typedef u16 __compat_gid_t; -typedef u16 compat_dev_t; typedef u16 compat_nlink_t; -typedef u16 compat_ipc_pid_t; -typedef __kernel_fsid_t compat_fsid_t; typedef struct { u32 mask; @@ -102,26 +108,10 @@ struct compat_stat { u32 __unused5; }; -struct compat_flock { - short l_type; - short l_whence; - compat_off_t l_start; - compat_off_t l_len; - compat_pid_t l_pid; -}; - #define F_GETLK64 12 #define F_SETLK64 13 #define F_SETLKW64 14 -struct compat_flock64 { - short l_type; - short l_whence; - compat_loff_t l_start; - compat_loff_t l_len; - compat_pid_t l_pid; -}; - struct compat_statfs { u32 f_type; u32 f_bsize; @@ -152,10 +142,6 @@ struct compat_statfs64 { u32 f_spare[4]; }; -#define COMPAT_RLIM_INFINITY 0xffffffff - -#define COMPAT_OFF_T_MAX 0x7fffffff - /* * A pointer passed in from user mode. This should not * be used for syscall parameters, just declare them @@ -178,61 +164,4 @@ static inline int is_compat_task(void) #endif -struct compat_ipc64_perm { - compat_key_t key; - __compat_uid32_t uid; - __compat_gid32_t gid; - __compat_uid32_t cuid; - __compat_gid32_t cgid; - compat_mode_t mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - unsigned int __unused1; - unsigned int __unused2; -}; - -struct compat_semid64_ds { - struct compat_ipc64_perm sem_perm; - compat_ulong_t sem_otime; - compat_ulong_t sem_otime_high; - compat_ulong_t sem_ctime; - compat_ulong_t sem_ctime_high; - compat_ulong_t sem_nsems; - compat_ulong_t __unused1; - compat_ulong_t __unused2; -}; - -struct compat_msqid64_ds { - struct compat_ipc64_perm msg_perm; - compat_ulong_t msg_stime; - compat_ulong_t msg_stime_high; - compat_ulong_t msg_rtime; - compat_ulong_t msg_rtime_high; - compat_ulong_t msg_ctime; - compat_ulong_t msg_ctime_high; - compat_ulong_t msg_cbytes; - compat_ulong_t msg_qnum; - compat_ulong_t msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - compat_ulong_t __unused1; - compat_ulong_t __unused2; -}; - -struct compat_shmid64_ds { - struct compat_ipc64_perm shm_perm; - compat_size_t shm_segsz; - compat_ulong_t shm_atime; - compat_ulong_t shm_atime_high; - compat_ulong_t shm_dtime; - compat_ulong_t shm_dtime_high; - compat_ulong_t shm_ctime; - compat_ulong_t shm_ctime_high; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - compat_ulong_t shm_nattch; - compat_ulong_t __unused1; - compat_ulong_t __unused2; -}; #endif /* _ASM_S390X_COMPAT_H */ diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h index bd949fcf9d63..63a32f1b13c4 100644 --- a/arch/sparc/include/asm/compat.h +++ b/arch/sparc/include/asm/compat.h @@ -9,17 +9,28 @@ #define compat_mode_t compat_mode_t typedef u16 compat_mode_t; +#define __compat_uid_t __compat_uid_t +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; + +#define compat_dev_t compat_dev_t +typedef u16 compat_dev_t; + +#define compat_ipc_pid_t compat_ipc_pid_t +typedef u16 compat_ipc_pid_t; + +#define compat_flock compat_flock +#define compat_flock64 compat_flock64 + +#define compat_ipc64_perm compat_ipc64_perm + +#define COMPAT_RLIM_INFINITY 0x7fffffff + #include -#define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "sparc\0\0" -typedef u16 __compat_uid_t; -typedef u16 __compat_gid_t; -typedef u16 compat_dev_t; typedef s16 compat_nlink_t; -typedef u16 compat_ipc_pid_t; -typedef __kernel_fsid_t compat_fsid_t; struct compat_stat { compat_dev_t st_dev; @@ -97,25 +108,6 @@ struct compat_flock64 { short __unused; }; -struct compat_statfs { - int f_type; - int f_bsize; - int f_blocks; - int f_bfree; - int f_bavail; - int f_files; - int f_ffree; - compat_fsid_t f_fsid; - int f_namelen; /* SunOS ignores this field. */ - int f_frsize; - int f_flags; - int f_spare[4]; -}; - -#define COMPAT_RLIM_INFINITY 0x7fffffff - -#define COMPAT_OFF_T_MAX 0x7fffffff - struct compat_ipc64_perm { compat_key_t key; __compat_uid32_t uid; diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h index 7516e4199b3c..d3523cf1b673 100644 --- a/arch/x86/include/asm/compat.h +++ b/arch/x86/include/asm/compat.h @@ -15,17 +15,24 @@ #define compat_mode_t compat_mode_t typedef u16 compat_mode_t; +#define __compat_uid_t __compat_uid_t +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; + +#define compat_dev_t compat_dev_t +typedef u16 compat_dev_t; + +#define compat_ipc_pid_t compat_ipc_pid_t +typedef u16 compat_ipc_pid_t; + +#define compat_flock64 compat_flock64 +#define compat_statfs compat_statfs + #include -#define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "i686\0\0" -typedef u16 __compat_uid_t; -typedef u16 __compat_gid_t; -typedef u16 compat_dev_t; typedef u16 compat_nlink_t; -typedef u16 compat_ipc_pid_t; -typedef __kernel_fsid_t compat_fsid_t; struct compat_stat { compat_dev_t st_dev; @@ -50,14 +57,6 @@ struct compat_stat { u32 __unused5; }; -struct compat_flock { - short l_type; - short l_whence; - compat_off_t l_start; - compat_off_t l_len; - compat_pid_t l_pid; -}; - #define F_GETLK64 12 /* using 'struct flock64' */ #define F_SETLK64 13 #define F_SETLKW64 14 @@ -89,68 +88,6 @@ struct compat_statfs { int f_spare[4]; }; -#define COMPAT_RLIM_INFINITY 0xffffffff - -#define COMPAT_OFF_T_MAX 0x7fffffff - -struct compat_ipc64_perm { - compat_key_t key; - __compat_uid32_t uid; - __compat_gid32_t gid; - __compat_uid32_t cuid; - __compat_gid32_t cgid; - unsigned short mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - compat_ulong_t unused1; - compat_ulong_t unused2; -}; - -struct compat_semid64_ds { - struct compat_ipc64_perm sem_perm; - compat_ulong_t sem_otime; - compat_ulong_t sem_otime_high; - compat_ulong_t sem_ctime; - compat_ulong_t sem_ctime_high; - compat_ulong_t sem_nsems; - compat_ulong_t __unused3; - compat_ulong_t __unused4; -}; - -struct compat_msqid64_ds { - struct compat_ipc64_perm msg_perm; - compat_ulong_t msg_stime; - compat_ulong_t msg_stime_high; - compat_ulong_t msg_rtime; - compat_ulong_t msg_rtime_high; - compat_ulong_t msg_ctime; - compat_ulong_t msg_ctime_high; - compat_ulong_t msg_cbytes; - compat_ulong_t msg_qnum; - compat_ulong_t msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - compat_ulong_t __unused4; - compat_ulong_t __unused5; -}; - -struct compat_shmid64_ds { - struct compat_ipc64_perm shm_perm; - compat_size_t shm_segsz; - compat_ulong_t shm_atime; - compat_ulong_t shm_atime_high; - compat_ulong_t shm_dtime; - compat_ulong_t shm_dtime_high; - compat_ulong_t shm_ctime; - compat_ulong_t shm_ctime_high; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - compat_ulong_t shm_nattch; - compat_ulong_t __unused4; - compat_ulong_t __unused5; -}; - #ifdef CONFIG_X86_X32_ABI #define COMPAT_USE_64BIT_TIME \ (!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)) diff --git a/include/asm-generic/compat.h b/include/asm-generic/compat.h index d46c0201cc34..32269059058a 100644 --- a/include/asm-generic/compat.h +++ b/include/asm-generic/compat.h @@ -2,6 +2,18 @@ #ifndef __ASM_GENERIC_COMPAT_H #define __ASM_GENERIC_COMPAT_H +#ifndef COMPAT_USER_HZ +#define COMPAT_USER_HZ 100 +#endif + +#ifndef COMPAT_RLIM_INFINITY +#define COMPAT_RLIM_INFINITY 0xffffffff +#endif + +#ifndef COMPAT_OFF_T_MAX +#define COMPAT_OFF_T_MAX 0x7fffffff +#endif + /* These types are common across all compat ABIs */ typedef u32 compat_size_t; typedef s32 compat_ssize_t; @@ -24,6 +36,11 @@ typedef u32 compat_caddr_t; typedef u32 compat_aio_context_t; typedef u32 compat_old_sigset_t; +#ifndef __compat_uid_t +typedef u32 __compat_uid_t; +typedef u32 __compat_gid_t; +#endif + #ifndef __compat_uid32_t typedef u32 __compat_uid32_t; typedef u32 __compat_gid32_t; @@ -47,4 +64,113 @@ typedef u32 compat_sigset_word; #define _COMPAT_NSIG_BPW 32 #endif +#ifndef compat_dev_t +typedef u32 compat_dev_t; +#endif + +#ifndef compat_ipc_pid_t +typedef s32 compat_ipc_pid_t; +#endif + +#ifndef compat_fsid_t +typedef __kernel_fsid_t compat_fsid_t; +#endif + +#ifndef compat_flock +struct compat_flock { + compat_short_t l_type; + compat_short_t l_whence; + compat_off_t l_start; + compat_off_t l_len; + compat_pid_t l_pid; +}; +#endif + +#ifndef compat_flock64 +struct compat_flock64 { + compat_short_t l_type; + compat_short_t l_whence; + compat_loff_t l_start; + compat_loff_t l_len; + compat_pid_t l_pid; +}; +#endif + +#ifndef compat_statfs +struct compat_statfs { + compat_int_t f_type; + compat_int_t f_bsize; + compat_int_t f_blocks; + compat_int_t f_bfree; + compat_int_t f_bavail; + compat_int_t f_files; + compat_int_t f_ffree; + compat_fsid_t f_fsid; + compat_int_t f_namelen; + compat_int_t f_frsize; + compat_int_t f_flags; + compat_int_t f_spare[4]; +}; +#endif + +#ifndef compat_ipc64_perm +struct compat_ipc64_perm { + compat_key_t key; + __compat_uid32_t uid; + __compat_gid32_t gid; + __compat_uid32_t cuid; + __compat_gid32_t cgid; + compat_mode_t mode; + unsigned char __pad1[4 - sizeof(compat_mode_t)]; + compat_ushort_t seq; + compat_ushort_t __pad2; + compat_ulong_t unused1; + compat_ulong_t unused2; +}; + +struct compat_semid64_ds { + struct compat_ipc64_perm sem_perm; + compat_ulong_t sem_otime; + compat_ulong_t sem_otime_high; + compat_ulong_t sem_ctime; + compat_ulong_t sem_ctime_high; + compat_ulong_t sem_nsems; + compat_ulong_t __unused3; + compat_ulong_t __unused4; +}; + +struct compat_msqid64_ds { + struct compat_ipc64_perm msg_perm; + compat_ulong_t msg_stime; + compat_ulong_t msg_stime_high; + compat_ulong_t msg_rtime; + compat_ulong_t msg_rtime_high; + compat_ulong_t msg_ctime; + compat_ulong_t msg_ctime_high; + compat_ulong_t msg_cbytes; + compat_ulong_t msg_qnum; + compat_ulong_t msg_qbytes; + compat_pid_t msg_lspid; + compat_pid_t msg_lrpid; + compat_ulong_t __unused4; + compat_ulong_t __unused5; +}; + +struct compat_shmid64_ds { + struct compat_ipc64_perm shm_perm; + compat_size_t shm_segsz; + compat_ulong_t shm_atime; + compat_ulong_t shm_atime_high; + compat_ulong_t shm_dtime; + compat_ulong_t shm_dtime_high; + compat_ulong_t shm_ctime; + compat_ulong_t shm_ctime_high; + compat_pid_t shm_cpid; + compat_pid_t shm_lpid; + compat_ulong_t shm_nattch; + compat_ulong_t __unused4; + compat_ulong_t __unused5; +}; +#endif + #endif From patchwork Sat Jan 29 12:17:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729504 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4D836C4332F for ; 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Sat, 29 Jan 2022 12:20:19 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmgL-004bwk-3n; Sat, 29 Jan 2022 12:18:18 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 9CBC3B827B4; Sat, 29 Jan 2022 12:18:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F728C340F7; Sat, 29 Jan 2022 12:18:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458692; bh=+ZSwjBDg5xL5gQ62/b1ZJaRA8ekyLRJoBOu+qchGA50=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KLPWnlGtXV4lGjuOC8QhEjaQuGi12f9Cg8WBiTrKtFhnx/gzJXrx+/Yx6KVCGLEtg GiNGsqCzBe8lvfCk+dJJgpYCZ7e5XaT5I3P6d6dTdG71f8k3lNLD4dmaANlDe4DxEh 4Ve4gWE5K8VLoaA1ev3Bh3wn53sbAfYu7COpj87OUnJLJnmVJynHWXbNwSJHNGg8nH hxTDFdBxT88EpnOMDsePoaFxc5yCCNLyUjmrdVnWg3dOT2DCxpNjuY/rQbBkjZuTcQ UMw7okyI5RmHE2S/vLo3urFn8qJ5wJEzREi9HTrgKks0zqJtc4fSpra5tBuATvbfXn DHuKCEJytKIRg== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 04/17] syscalls: compat: Fix the missing part for __SYSCALL_COMPAT Date: Sat, 29 Jan 2022 20:17:15 +0800 Message-Id: <20220129121728.1079364-5-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041817_473145_F3489B52 X-CRM114-Status: GOOD ( 10.49 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Make "uapi asm unistd.h" could be used for architectures' COMPAT mode. The __SYSCALL_COMPAT is first used in riscv. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann Reviewed-by: Christoph Hellwig --- include/uapi/asm-generic/unistd.h | 4 ++-- tools/include/uapi/asm-generic/unistd.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index 1c48b0ae3ba3..45fa180cc56a 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -383,7 +383,7 @@ __SYSCALL(__NR_syslog, sys_syslog) /* kernel/ptrace.c */ #define __NR_ptrace 117 -__SYSCALL(__NR_ptrace, sys_ptrace) +__SC_COMP(__NR_ptrace, sys_ptrace, compat_sys_ptrace) /* kernel/sched/core.c */ #define __NR_sched_setparam 118 @@ -779,7 +779,7 @@ __SYSCALL(__NR_rseq, sys_rseq) #define __NR_kexec_file_load 294 __SYSCALL(__NR_kexec_file_load, sys_kexec_file_load) /* 295 through 402 are unassigned to sync up with generic numbers, don't use */ -#if __BITS_PER_LONG == 32 +#if defined(__SYSCALL_COMPAT) || __BITS_PER_LONG == 32 #define __NR_clock_gettime64 403 __SYSCALL(__NR_clock_gettime64, sys_clock_gettime) #define __NR_clock_settime64 404 diff --git a/tools/include/uapi/asm-generic/unistd.h b/tools/include/uapi/asm-generic/unistd.h index 1c48b0ae3ba3..45fa180cc56a 100644 --- a/tools/include/uapi/asm-generic/unistd.h +++ b/tools/include/uapi/asm-generic/unistd.h @@ -383,7 +383,7 @@ __SYSCALL(__NR_syslog, sys_syslog) /* kernel/ptrace.c */ #define __NR_ptrace 117 -__SYSCALL(__NR_ptrace, sys_ptrace) +__SC_COMP(__NR_ptrace, sys_ptrace, compat_sys_ptrace) /* kernel/sched/core.c */ #define __NR_sched_setparam 118 @@ -779,7 +779,7 @@ __SYSCALL(__NR_rseq, sys_rseq) #define __NR_kexec_file_load 294 __SYSCALL(__NR_kexec_file_load, sys_kexec_file_load) /* 295 through 402 are unassigned to sync up with generic numbers, don't use */ -#if __BITS_PER_LONG == 32 +#if defined(__SYSCALL_COMPAT) || __BITS_PER_LONG == 32 #define __NR_clock_gettime64 403 __SYSCALL(__NR_clock_gettime64, sys_clock_gettime) #define __NR_clock_settime64 404 From patchwork Sat Jan 29 12:17:16 2022 Content-Type: text/plain; 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Sat, 29 Jan 2022 12:18:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458699; bh=k6jmX3NaeW58cC9XxFx9n3aHosg2PHxVoweMQ+4+7Pc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S11tR7X47hD0L3D9sZJCBosqlCXpn1i2LwrB2rnPrI11i6zMPM8+r1NtTu1i7QHE6 2J0azycn5nAEhTmRCy0FOnx14dPe7VO5+6o0Vi/KxBkUW+cKszxWfKZVfD8c1UOnZ/ 9vvtamlM+r6LSbaMU8voji7w/BnQM9JOLSZQ53JS74zQVi1Ub8Sh1XXaeXuJ2u200K TKhSsiRyHE2i/fLVUIyrJilpUHkK61BH52vY/B3kfgXiXeZZRMbb6P9AWSbNaV8kJ+ nS+N70pEouxcc7HbHrMql+HgS48kMcdbff56iCkCSEtqG7yV3Tlect3XPdPC8ik+a6 tRjdqh2Ow4BlA== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren , Anup Patel Subject: [PATCH V4 05/17] riscv: Fixup difference with defconfig Date: Sat, 29 Jan 2022 20:17:16 +0800 Message-Id: <20220129121728.1079364-6-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041822_228606_0C4FFDF6 X-CRM114-Status: GOOD ( 11.60 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Let's follow the origin patch's spirit: The only difference between rv32_defconfig and defconfig is that rv32_defconfig has CONFIG_ARCH_RV32I=y. This is helpful to compare rv64-compat-rv32 v.s. rv32-linux. Fixes: 1b937e8faa87ccfb ("RISC-V: Add separate defconfig for 32bit systems") Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Anup Patel Cc: Palmer Dabbelt --- arch/riscv/Makefile | 4 + arch/riscv/configs/rv32_defconfig | 135 ------------------------------ 2 files changed, 4 insertions(+), 135 deletions(-) delete mode 100644 arch/riscv/configs/rv32_defconfig diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 8a107ed18b0d..a02e588c4947 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -148,3 +148,7 @@ PHONY += rv64_randconfig rv64_randconfig: $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/64-bit.config \ -f $(srctree)/Makefile randconfig + +PHONY += rv32_defconfig +rv32_defconfig: + $(Q)$(MAKE) -f $(srctree)/Makefile defconfig 32-bit.config diff --git a/arch/riscv/configs/rv32_defconfig b/arch/riscv/configs/rv32_defconfig deleted file mode 100644 index 8b56a7f1eb06..000000000000 --- a/arch/riscv/configs/rv32_defconfig +++ /dev/null @@ -1,135 +0,0 @@ -CONFIG_SYSVIPC=y -CONFIG_POSIX_MQUEUE=y -CONFIG_NO_HZ_IDLE=y -CONFIG_HIGH_RES_TIMERS=y -CONFIG_BPF_SYSCALL=y -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_CGROUPS=y -CONFIG_CGROUP_SCHED=y -CONFIG_CFS_BANDWIDTH=y -CONFIG_CGROUP_BPF=y -CONFIG_NAMESPACES=y -CONFIG_USER_NS=y -CONFIG_CHECKPOINT_RESTORE=y -CONFIG_BLK_DEV_INITRD=y -CONFIG_EXPERT=y -# CONFIG_SYSFS_SYSCALL is not set -CONFIG_SOC_SIFIVE=y -CONFIG_SOC_VIRT=y -CONFIG_ARCH_RV32I=y -CONFIG_SMP=y -CONFIG_HOTPLUG_CPU=y -CONFIG_VIRTUALIZATION=y -CONFIG_KVM=m -CONFIG_JUMP_LABEL=y -CONFIG_MODULES=y -CONFIG_MODULE_UNLOAD=y -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_INET=y -CONFIG_IP_MULTICAST=y -CONFIG_IP_ADVANCED_ROUTER=y -CONFIG_IP_PNP=y -CONFIG_IP_PNP_DHCP=y -CONFIG_IP_PNP_BOOTP=y -CONFIG_IP_PNP_RARP=y -CONFIG_NETLINK_DIAG=y -CONFIG_NET_9P=y -CONFIG_NET_9P_VIRTIO=y -CONFIG_PCI=y -CONFIG_PCIEPORTBUS=y -CONFIG_PCI_HOST_GENERIC=y -CONFIG_PCIE_XILINX=y -CONFIG_DEVTMPFS=y -CONFIG_DEVTMPFS_MOUNT=y -CONFIG_BLK_DEV_LOOP=y -CONFIG_VIRTIO_BLK=y -CONFIG_BLK_DEV_SD=y -CONFIG_BLK_DEV_SR=y -CONFIG_SCSI_VIRTIO=y -CONFIG_ATA=y -CONFIG_SATA_AHCI=y -CONFIG_SATA_AHCI_PLATFORM=y -CONFIG_NETDEVICES=y -CONFIG_VIRTIO_NET=y -CONFIG_MACB=y -CONFIG_E1000E=y -CONFIG_R8169=y -CONFIG_MICROSEMI_PHY=y -CONFIG_INPUT_MOUSEDEV=y -CONFIG_SERIAL_8250=y -CONFIG_SERIAL_8250_CONSOLE=y -CONFIG_SERIAL_OF_PLATFORM=y -CONFIG_SERIAL_EARLYCON_RISCV_SBI=y -CONFIG_HVC_RISCV_SBI=y -CONFIG_VIRTIO_CONSOLE=y -CONFIG_HW_RANDOM=y -CONFIG_HW_RANDOM_VIRTIO=y -CONFIG_SPI=y -CONFIG_SPI_SIFIVE=y -# CONFIG_PTP_1588_CLOCK is not set -CONFIG_DRM=y -CONFIG_DRM_RADEON=y -CONFIG_DRM_VIRTIO_GPU=y -CONFIG_FB=y -CONFIG_FRAMEBUFFER_CONSOLE=y -CONFIG_USB=y -CONFIG_USB_XHCI_HCD=y -CONFIG_USB_XHCI_PLATFORM=y -CONFIG_USB_EHCI_HCD=y -CONFIG_USB_EHCI_HCD_PLATFORM=y -CONFIG_USB_OHCI_HCD=y -CONFIG_USB_OHCI_HCD_PLATFORM=y -CONFIG_USB_STORAGE=y -CONFIG_USB_UAS=y -CONFIG_MMC=y -CONFIG_MMC_SPI=y -CONFIG_RTC_CLASS=y -CONFIG_VIRTIO_PCI=y -CONFIG_VIRTIO_BALLOON=y -CONFIG_VIRTIO_INPUT=y -CONFIG_VIRTIO_MMIO=y -CONFIG_RPMSG_CHAR=y -CONFIG_RPMSG_VIRTIO=y -CONFIG_EXT4_FS=y -CONFIG_EXT4_FS_POSIX_ACL=y -CONFIG_AUTOFS4_FS=y -CONFIG_MSDOS_FS=y -CONFIG_VFAT_FS=y -CONFIG_TMPFS=y -CONFIG_TMPFS_POSIX_ACL=y -CONFIG_NFS_FS=y -CONFIG_NFS_V4=y -CONFIG_NFS_V4_1=y -CONFIG_NFS_V4_2=y -CONFIG_ROOT_NFS=y -CONFIG_9P_FS=y -CONFIG_CRYPTO_USER_API_HASH=y -CONFIG_CRYPTO_DEV_VIRTIO=y -CONFIG_PRINTK_TIME=y -CONFIG_DEBUG_FS=y -CONFIG_DEBUG_PAGEALLOC=y -CONFIG_SCHED_STACK_END_CHECK=y -CONFIG_DEBUG_VM=y -CONFIG_DEBUG_VM_PGFLAGS=y -CONFIG_DEBUG_MEMORY_INIT=y -CONFIG_DEBUG_PER_CPU_MAPS=y -CONFIG_SOFTLOCKUP_DETECTOR=y -CONFIG_WQ_WATCHDOG=y -CONFIG_DEBUG_TIMEKEEPING=y -CONFIG_DEBUG_RT_MUTEXES=y -CONFIG_DEBUG_SPINLOCK=y -CONFIG_DEBUG_MUTEXES=y -CONFIG_DEBUG_RWSEMS=y -CONFIG_DEBUG_ATOMIC_SLEEP=y -CONFIG_STACKTRACE=y -CONFIG_DEBUG_LIST=y -CONFIG_DEBUG_PLIST=y -CONFIG_DEBUG_SG=y -# CONFIG_RCU_TRACE is not set -CONFIG_RCU_EQS_DEBUG=y -# CONFIG_FTRACE is not set -# CONFIG_RUNTIME_TESTING_MENU is not set -CONFIG_MEMTEST=y From patchwork Sat Jan 29 12:17:17 2022 Content-Type: text/plain; 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Sat, 29 Jan 2022 12:18:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458705; bh=G4Z4BRARasIgrFuOvbwy5pdapZpEjfE9N+vqaSNYHgo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U4QxYcjgrS/TlI5KLCOuy0d/DDY4s1M5bGRwIuAv/fZpLjXRTJUgzPyicftEX3vz0 cZMPDDZ9WCHSz4zxH64+MZ1h1331j9sDwvxxkbcUu5rebcftv3Ad2+5pD3RsPXAdOl hX5OkgY6JfSWvXCDSrd2OVJHsZt73oY0T2G/qBkeubnPZJyHh88RFrFG5mmVzP2j+A 0JwSJ936cOOaNJAmXrBA+8PbOTGvk5W2wDadxt7IN4T7zsJHCJ51trluipSyf5qdXD LCkY/k6kPcQ6LLFHcdjyeaydVQEN/jEi/XN9bBmNl9gvfSlea6df+t84S19kwNBjHK lNyH0FrHUM6VQ== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 06/17] riscv: compat: Add basic compat date type implementation Date: Sat, 29 Jan 2022 20:17:17 +0800 Message-Id: <20220129121728.1079364-7-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041829_196388_B362E830 X-CRM114-Status: GOOD ( 13.40 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Implement asm/compat.h for struct compat_xxx, RLIM_INFINITY, OFF_T_MAX, is_compat_task, compat_user_regset, regset convert. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/riscv/include/asm/compat.h | 135 +++++++++++++++++++++++++++ arch/riscv/include/asm/thread_info.h | 1 + 2 files changed, 136 insertions(+) create mode 100644 arch/riscv/include/asm/compat.h diff --git a/arch/riscv/include/asm/compat.h b/arch/riscv/include/asm/compat.h new file mode 100644 index 000000000000..3d3e89629e3b --- /dev/null +++ b/arch/riscv/include/asm/compat.h @@ -0,0 +1,135 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __ASM_COMPAT_H +#define __ASM_COMPAT_H + +#define COMPAT_UTS_MACHINE "riscv\0\0" + +#define COMPAT_RLIM_INFINITY 0x7fffffff + +/* + * Architecture specific compatibility types + */ +#include +#include +#include +#include + +#define F_GETLK64 12 +#define F_SETLK64 13 +#define F_SETLKW64 14 + +static inline int is_compat_task(void) +{ + return test_thread_flag(TIF_32BIT); +} + +struct compat_user_regs_struct { + compat_ulong_t pc; + compat_ulong_t ra; + compat_ulong_t sp; + compat_ulong_t gp; + compat_ulong_t tp; + compat_ulong_t t0; + compat_ulong_t t1; + compat_ulong_t t2; + compat_ulong_t s0; + compat_ulong_t s1; + compat_ulong_t a0; + compat_ulong_t a1; + compat_ulong_t a2; + compat_ulong_t a3; + compat_ulong_t a4; + compat_ulong_t a5; + compat_ulong_t a6; + compat_ulong_t a7; + compat_ulong_t s2; + compat_ulong_t s3; + compat_ulong_t s4; + compat_ulong_t s5; + compat_ulong_t s6; + compat_ulong_t s7; + compat_ulong_t s8; + compat_ulong_t s9; + compat_ulong_t s10; + compat_ulong_t s11; + compat_ulong_t t3; + compat_ulong_t t4; + compat_ulong_t t5; + compat_ulong_t t6; +}; + +static inline void regs_to_cregs(struct compat_user_regs_struct *cregs, + struct pt_regs *regs) +{ + cregs->pc = (compat_ulong_t) regs->epc; + cregs->ra = (compat_ulong_t) regs->ra; + cregs->sp = (compat_ulong_t) regs->sp; + cregs->gp = (compat_ulong_t) regs->gp; + cregs->tp = (compat_ulong_t) regs->tp; + cregs->t0 = (compat_ulong_t) regs->t0; + cregs->t1 = (compat_ulong_t) regs->t1; + cregs->t2 = (compat_ulong_t) regs->t2; + cregs->s0 = (compat_ulong_t) regs->s0; + cregs->s1 = (compat_ulong_t) regs->s1; + cregs->a0 = (compat_ulong_t) regs->a0; + cregs->a1 = (compat_ulong_t) regs->a1; + cregs->a2 = (compat_ulong_t) regs->a2; + cregs->a3 = (compat_ulong_t) regs->a3; + cregs->a4 = (compat_ulong_t) regs->a4; + cregs->a5 = (compat_ulong_t) regs->a5; + cregs->a6 = (compat_ulong_t) regs->a6; + cregs->a7 = (compat_ulong_t) regs->a7; + cregs->s2 = (compat_ulong_t) regs->s2; + cregs->s3 = (compat_ulong_t) regs->s3; + cregs->s4 = (compat_ulong_t) regs->s4; + cregs->s5 = (compat_ulong_t) regs->s5; + cregs->s6 = (compat_ulong_t) regs->s6; + cregs->s7 = (compat_ulong_t) regs->s7; + cregs->s8 = (compat_ulong_t) regs->s8; + cregs->s9 = (compat_ulong_t) regs->s9; + cregs->s10 = (compat_ulong_t) regs->s10; + cregs->s11 = (compat_ulong_t) regs->s11; + cregs->t3 = (compat_ulong_t) regs->t3; + cregs->t4 = (compat_ulong_t) regs->t4; + cregs->t5 = (compat_ulong_t) regs->t5; + cregs->t6 = (compat_ulong_t) regs->t6; +}; + +static inline void cregs_to_regs(struct compat_user_regs_struct *cregs, + struct pt_regs *regs) +{ + regs->epc = (unsigned long) cregs->pc; + regs->ra = (unsigned long) cregs->ra; + regs->sp = (unsigned long) cregs->sp; + regs->gp = (unsigned long) cregs->gp; + regs->tp = (unsigned long) cregs->tp; + regs->t0 = (unsigned long) cregs->t0; + regs->t1 = (unsigned long) cregs->t1; + regs->t2 = (unsigned long) cregs->t2; + regs->s0 = (unsigned long) cregs->s0; + regs->s1 = (unsigned long) cregs->s1; + regs->a0 = (unsigned long) cregs->a0; + regs->a1 = (unsigned long) cregs->a1; + regs->a2 = (unsigned long) cregs->a2; + regs->a3 = (unsigned long) cregs->a3; + regs->a4 = (unsigned long) cregs->a4; + regs->a5 = (unsigned long) cregs->a5; + regs->a6 = (unsigned long) cregs->a6; + regs->a7 = (unsigned long) cregs->a7; + regs->s2 = (unsigned long) cregs->s2; + regs->s3 = (unsigned long) cregs->s3; + regs->s4 = (unsigned long) cregs->s4; + regs->s5 = (unsigned long) cregs->s5; + regs->s6 = (unsigned long) cregs->s6; + regs->s7 = (unsigned long) cregs->s7; + regs->s8 = (unsigned long) cregs->s8; + regs->s9 = (unsigned long) cregs->s9; + regs->s10 = (unsigned long) cregs->s10; + regs->s11 = (unsigned long) cregs->s11; + regs->t3 = (unsigned long) cregs->t3; + regs->t4 = (unsigned long) cregs->t4; + regs->t5 = (unsigned long) cregs->t5; + regs->t6 = (unsigned long) cregs->t6; +}; + +#endif /* __ASM_COMPAT_H */ diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h index 60da0dcacf14..9392e35c689d 100644 --- a/arch/riscv/include/asm/thread_info.h +++ b/arch/riscv/include/asm/thread_info.h @@ -91,6 +91,7 @@ struct thread_info { #define TIF_SECCOMP 8 /* syscall secure computing */ #define TIF_NOTIFY_SIGNAL 9 /* signal notifications exist */ #define TIF_UPROBE 10 /* uprobe breakpoint or singlestep */ +#define TIF_32BIT 11 /* 32bit process */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) From patchwork Sat Jan 29 12:17:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729507 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5DD72C433F5 for ; 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Sat, 29 Jan 2022 12:22:29 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmgc-004c7Q-JE; Sat, 29 Jan 2022 12:18:36 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 2EF4CB827B7; Sat, 29 Jan 2022 12:18:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F153EC340E8; Sat, 29 Jan 2022 12:18:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458711; bh=a1sC80QEMsJ1SgwAfWEJYAxYwB7cBGeGznoe8NpsNfM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NWYm1G0mH+VnzdIeOy4+kveE42zhVODVeZGjghOSNXZHcsN+jtZDpLBb8TgfqMHZF 7BwEjWhkkEV9tbi3e9N4CLvGuqleSvY9loLAgUO0KcZdxWlTXGBbZCvrLAr+tdgeG4 ju+kJ49Uy0y7rg+N8wFqEesqZ6io0Lz2iaHOhlsGYk6x7HtvONJyc0g5G0W/PthI/v 80k/AKQtYXUVnfXFzvHpqzY3/8BvGwOy4ZGRXQTOaK2FO30Sqg+ZHqhkKkHbGUMTeF deVLcGC142vbsthS2fAP3NYwoF96raWYV2fyUnls4Uxc+lscOuk1ZdSsGQUQ+Gzn41 TrYaNs1aJgrSw== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 07/17] riscv: compat: Re-implement TASK_SIZE for COMPAT_32BIT Date: Sat, 29 Jan 2022 20:17:18 +0800 Message-Id: <20220129121728.1079364-8-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041834_805693_35522E4A X-CRM114-Status: GOOD ( 10.60 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Make TASK_SIZE from const to dynamic detect TIF_32BIT flag function. Refer to arm64 to implement DEFAULT_MAP_WINDOW_64 for efi-stub. Limit 32-bit compatible process in 0-2GB virtual address range (which is enough for real scenarios), because it could avoid address sign extend problem when 32-bit enter 64-bit and ease software design. The standard 32-bit TASK_SIZE is 0x9dc00000:FIXADDR_START, and compared to a compatible 32-bit, it increases 476MB for the application's virtual address. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann --- arch/riscv/include/asm/pgtable.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 7e949f25c933..f0d125ea3ceb 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -704,8 +704,17 @@ static inline pmd_t pmdp_establish(struct vm_area_struct *vma, * 63–48 all equal to bit 47, or else a page-fault exception will occur." */ #ifdef CONFIG_64BIT -#define TASK_SIZE (PGDIR_SIZE * PTRS_PER_PGD / 2) -#define TASK_SIZE_MIN (PGDIR_SIZE_L3 * PTRS_PER_PGD / 2) +#define TASK_SIZE_64 (PGDIR_SIZE * PTRS_PER_PGD / 2) +#define TASK_SIZE_MIN (PGDIR_SIZE_L3 * PTRS_PER_PGD / 2) + +#ifdef CONFIG_COMPAT +#define TASK_SIZE_32 (_AC(0x80000000, UL) - PAGE_SIZE) +#define TASK_SIZE (test_thread_flag(TIF_32BIT) ? \ + TASK_SIZE_32 : TASK_SIZE_64) +#else +#define TASK_SIZE TASK_SIZE_64 +#endif + #else #define TASK_SIZE FIXADDR_START #define TASK_SIZE_MIN TASK_SIZE From patchwork Sat Jan 29 12:17:19 2022 Content-Type: text/plain; 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Sat, 29 Jan 2022 12:18:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458718; bh=AVBhZ6mvaynHSvTjpMrfy0VIb0ZM79b6721KFvNFepo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m33Jn6g9VkCeHbKptQ5QXrMUEdyOL4UJUAiX/ap+z+9/v/4O44ZviMWs7+l0WGJpa qzfZzqbDcARNOJWx6bRhYNndcjJZ6GI/x14HvqIDGvPyPe9AVef251prxi/BsOvxvC DaiF1MyomIcPPfcdfWJREWfNByFo9AiGFbE1wjGqkuliOLXpK79xUH3fyn27IyyG9P F/IkxgYF4TORFgcOjMnNk+tBYJIE7Pr9OIDcc7yKQBv8lkW5yuGii8ldzZj+yRZg0y jrv0aFgurKhRoJxJg/GbKqxR/Edt2AOMaICxehsZjDyWhIFK8qDdK0006N16xP1jK0 pXRIe/CiTS/xg== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 08/17] riscv: compat: syscall: Add compat_sys_call_table implementation Date: Sat, 29 Jan 2022 20:17:19 +0800 Message-Id: <20220129121728.1079364-9-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041841_397199_5C830B8F X-CRM114-Status: GOOD ( 19.69 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Implement compat sys_call_table and some system call functions: truncate64, ftruncate64, fallocate, pread64, pwrite64, sync_file_range, readahead, fadvise64_64 which need argument translation. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/riscv/include/asm/syscall.h | 1 + arch/riscv/include/asm/unistd.h | 11 +++++++ arch/riscv/include/uapi/asm/unistd.h | 2 +- arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/compat_syscall_table.c | 19 ++++++++++++ arch/riscv/kernel/sys_riscv.c | 6 ++-- fs/open.c | 24 +++++++++++++++ fs/read_write.c | 16 ++++++++++ fs/sync.c | 9 ++++++ include/asm-generic/compat.h | 7 +++++ include/linux/compat.h | 37 ++++++++++++++++++++++++ mm/fadvise.c | 11 +++++++ mm/readahead.c | 7 +++++ 13 files changed, 148 insertions(+), 3 deletions(-) create mode 100644 arch/riscv/kernel/compat_syscall_table.c diff --git a/arch/riscv/include/asm/syscall.h b/arch/riscv/include/asm/syscall.h index 7ac6a0e275f2..384a63b86420 100644 --- a/arch/riscv/include/asm/syscall.h +++ b/arch/riscv/include/asm/syscall.h @@ -16,6 +16,7 @@ /* The array of function pointers for syscalls. */ extern void * const sys_call_table[]; +extern void * const compat_sys_call_table[]; /* * Only the low 32 bits of orig_r0 are meaningful, so we return int. diff --git a/arch/riscv/include/asm/unistd.h b/arch/riscv/include/asm/unistd.h index 6c316093a1e5..5ddac412b578 100644 --- a/arch/riscv/include/asm/unistd.h +++ b/arch/riscv/include/asm/unistd.h @@ -11,6 +11,17 @@ #define __ARCH_WANT_SYS_CLONE #define __ARCH_WANT_MEMFD_SECRET +#ifdef CONFIG_COMPAT +#define __ARCH_WANT_COMPAT_TRUNCATE64 +#define __ARCH_WANT_COMPAT_FTRUNCATE64 +#define __ARCH_WANT_COMPAT_FALLOCATE +#define __ARCH_WANT_COMPAT_PREAD64 +#define __ARCH_WANT_COMPAT_PWRITE64 +#define __ARCH_WANT_COMPAT_SYNC_FILE_RANGE +#define __ARCH_WANT_COMPAT_READAHEAD +#define __ARCH_WANT_COMPAT_FADVISE64_64 +#endif + #include #define NR_syscalls (__NR_syscalls) diff --git a/arch/riscv/include/uapi/asm/unistd.h b/arch/riscv/include/uapi/asm/unistd.h index 8062996c2dfd..c9e50eed14aa 100644 --- a/arch/riscv/include/uapi/asm/unistd.h +++ b/arch/riscv/include/uapi/asm/unistd.h @@ -15,7 +15,7 @@ * along with this program. If not, see . */ -#ifdef __LP64__ +#if defined(__LP64__) && !defined(__SYSCALL_COMPAT) #define __ARCH_WANT_NEW_STAT #define __ARCH_WANT_SET_GET_RLIMIT #endif /* __LP64__ */ diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 612556faa527..954dc7043ad2 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -66,3 +66,4 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_EFI) += efi.o +obj-$(CONFIG_COMPAT) += compat_syscall_table.o diff --git a/arch/riscv/kernel/compat_syscall_table.c b/arch/riscv/kernel/compat_syscall_table.c new file mode 100644 index 000000000000..651f2b009c28 --- /dev/null +++ b/arch/riscv/kernel/compat_syscall_table.c @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#define __SYSCALL_COMPAT + +#include +#include +#include +#include +#include + +#undef __SYSCALL +#define __SYSCALL(nr, call) [nr] = (call), + +asmlinkage long compat_sys_rt_sigreturn(void); + +void * const compat_sys_call_table[__NR_syscalls] = { + [0 ... __NR_syscalls - 1] = sys_ni_syscall, +#include +}; diff --git a/arch/riscv/kernel/sys_riscv.c b/arch/riscv/kernel/sys_riscv.c index 12f8a7fce78b..9c0194f176fc 100644 --- a/arch/riscv/kernel/sys_riscv.c +++ b/arch/riscv/kernel/sys_riscv.c @@ -33,7 +33,9 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, { return riscv_sys_mmap(addr, len, prot, flags, fd, offset, 0); } -#else +#endif + +#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT) SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, unsigned long, fd, off_t, offset) @@ -44,7 +46,7 @@ SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, */ return riscv_sys_mmap(addr, len, prot, flags, fd, offset, 12); } -#endif /* !CONFIG_64BIT */ +#endif /* * Allows the instruction cache to be flushed from userspace. Despite RISC-V diff --git a/fs/open.c b/fs/open.c index 9ff2f621b760..b25613f7c0a7 100644 --- a/fs/open.c +++ b/fs/open.c @@ -224,6 +224,21 @@ SYSCALL_DEFINE2(ftruncate64, unsigned int, fd, loff_t, length) } #endif /* BITS_PER_LONG == 32 */ +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_TRUNCATE64) +COMPAT_SYSCALL_DEFINE3(truncate64, const char __user *, pathname, + compat_arg_u64_dual(length)) +{ + return ksys_truncate(pathname, compat_arg_u64_glue(length)); +} +#endif + +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_FTRUNCATE64) +COMPAT_SYSCALL_DEFINE3(ftruncate64, unsigned int, fd, + compat_arg_u64_dual(length)) +{ + return ksys_ftruncate(fd, compat_arg_u64_glue(length)); +} +#endif int vfs_fallocate(struct file *file, int mode, loff_t offset, loff_t len) { @@ -339,6 +354,15 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) return ksys_fallocate(fd, mode, offset, len); } +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_FALLOCATE) +COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode, compat_arg_u64_dual(offset), + compat_arg_u64_dual(len)) +{ + return ksys_fallocate(fd, mode, compat_arg_u64_glue(offset), + compat_arg_u64_glue(len)); +} +#endif + /* * access() needs to use the real uid/gid, not the effective uid/gid. * We do this by temporarily clearing all FS-related capabilities and diff --git a/fs/read_write.c b/fs/read_write.c index 0074afa7ecb3..548657c462e8 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -681,6 +681,14 @@ SYSCALL_DEFINE4(pread64, unsigned int, fd, char __user *, buf, return ksys_pread64(fd, buf, count, pos); } +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_PREAD64) +COMPAT_SYSCALL_DEFINE5(pread64, unsigned int, fd, char __user *, buf, + size_t, count, compat_arg_u64_dual(pos)) +{ + return ksys_pread64(fd, buf, count, compat_arg_u64_glue(pos)); +} +#endif + ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf, size_t count, loff_t pos) { @@ -707,6 +715,14 @@ SYSCALL_DEFINE4(pwrite64, unsigned int, fd, const char __user *, buf, return ksys_pwrite64(fd, buf, count, pos); } +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_PWRITE64) +COMPAT_SYSCALL_DEFINE5(pwrite64, unsigned int, fd, const char __user *, buf, + size_t, count, compat_arg_u64_dual(pos)) +{ + return ksys_pwrite64(fd, buf, count, compat_arg_u64_glue(pos)); +} +#endif + static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, loff_t *ppos, int type, rwf_t flags) { diff --git a/fs/sync.c b/fs/sync.c index 3ce8e2137f31..75edb7a664e5 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -367,6 +367,15 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes, return ksys_sync_file_range(fd, offset, nbytes, flags); } +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_SYNC_FILE_RANGE) +COMPAT_SYSCALL_DEFINE6(sync_file_range, int, fd, compat_arg_u64_dual(offset), + compat_arg_u64_dual(nbytes), unsigned int, flags) +{ + return ksys_sync_file_range(fd, compat_arg_u64_glue(offset), + compat_arg_u64_glue(nbytes), flags); +} +#endif + /* It would be nice if people remember that not all the world's an i386 when they introduce new system calls */ SYSCALL_DEFINE4(sync_file_range2, int, fd, unsigned int, flags, diff --git a/include/asm-generic/compat.h b/include/asm-generic/compat.h index 32269059058a..cdf1124a4883 100644 --- a/include/asm-generic/compat.h +++ b/include/asm-generic/compat.h @@ -14,6 +14,13 @@ #define COMPAT_OFF_T_MAX 0x7fffffff #endif +#ifndef compat_arg_u64 +#define compat_arg_u64(name) u32 name##_lo, u32 name##_hi +#define compat_arg_u64_dual(name) u32, name##_lo, u32, name##_hi +#define compat_arg_u64_glue(name) (((u64)name##_hi << 32) | \ + ((u64)name##_lo & 0xffffffffUL)) +#endif + /* These types are common across all compat ABIs */ typedef u32 compat_size_t; typedef s32 compat_ssize_t; diff --git a/include/linux/compat.h b/include/linux/compat.h index 1c758b0e0359..841d882c41e2 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -895,6 +895,43 @@ asmlinkage long compat_sys_sigaction(int sig, /* obsolete: net/socket.c */ asmlinkage long compat_sys_socketcall(int call, u32 __user *args); +#ifdef __ARCH_WANT_COMPAT_TRUNCATE64 +asmlinkage long compat_sys_truncate64(const char __user *pathname, compat_arg_u64(len)); +#endif + +#ifdef __ARCH_WANT_COMPAT_FTRUNCATE64 +asmlinkage long compat_sys_ftruncate64(unsigned int fd, compat_arg_u64(len)); +#endif + +#ifdef __ARCH_WANT_COMPAT_FALLOCATE +asmlinkage long compat_sys_fallocate(int fd, int mode, compat_arg_u64(offset), + compat_arg_u64(len)); +#endif + +#ifdef __ARCH_WANT_COMPAT_PREAD64 +asmlinkage long compat_sys_pread64(unsigned int fd, char __user * buf, size_t count, + compat_arg_u64(pos)); +#endif + +#ifdef __ARCH_WANT_COMPAT_PWRITE64 +asmlinkage long compat_sys_pwrite64(unsigned int fd, const char __user * buf, size_t count, + compat_arg_u64(pos)); +#endif + +#ifdef __ARCH_WANT_COMPAT_SYNC_FILE_RANGE +asmlinkage long compat_sys_sync_file_range(int fd, compat_arg_u64(pos), + compat_arg_u64(nbytes), unsigned int flags); +#endif + +#ifdef __ARCH_WANT_COMPAT_FADVISE64_64 +asmlinkage long compat_sys_fadvise64_64(int fd, int advice, compat_arg_u64(pos), + compat_arg_u64(len)); +#endif + +#ifdef __ARCH_WANT_COMPAT_READAHEAD +asmlinkage long compat_sys_readahead(int fd, compat_arg_u64(offset), size_t count); +#endif + #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ /** diff --git a/mm/fadvise.c b/mm/fadvise.c index d6baa4f451c5..8950f7c05d20 100644 --- a/mm/fadvise.c +++ b/mm/fadvise.c @@ -215,5 +215,16 @@ SYSCALL_DEFINE4(fadvise64, int, fd, loff_t, offset, size_t, len, int, advice) return ksys_fadvise64_64(fd, offset, len, advice); } +#endif + +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_FADVISE64_64) + +COMPAT_SYSCALL_DEFINE6(fadvise64_64, int, fd, int, advice, compat_arg_u64_dual(offset), + compat_arg_u64_dual(len)) +{ + return ksys_fadvise64_64(fd, compat_arg_u64_glue(offset), + compat_arg_u64_glue(len), advice); +} + #endif #endif diff --git a/mm/readahead.c b/mm/readahead.c index cf0dcf89eb69..9adf57044299 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -640,6 +640,13 @@ SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count) return ksys_readahead(fd, offset, count); } +#if defined(CONFIG_COMPAT) && defined(__ARCH_WANT_COMPAT_READAHEAD) +COMPAT_SYSCALL_DEFINE4(readahead, int, fd, compat_arg_u64_dual(offset), size_t, count) +{ + return ksys_readahead(fd, compat_arg_u64_glue(offset), count); +} +#endif + /** * readahead_expand - Expand a readahead request * @ractl: The request to be expanded From patchwork Sat Jan 29 12:17:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729521 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7BED7C433F5 for ; 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Sat, 29 Jan 2022 12:24:10 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmgn-004cEj-MM; Sat, 29 Jan 2022 12:18:47 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2AB4760BA0; Sat, 29 Jan 2022 12:18:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB63EC340EF; Sat, 29 Jan 2022 12:18:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458724; bh=q8bDTZe0nvVf8IvNriLF4Pp2BAUqoYv2qqiLGFTl3wc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q4+2JTmgzbyh3gLxAYEFoYkDgM7kCowH4SfFcEtRa3vzV3GU68TlGfQcJaaFJ6zoy Hmu9icK3t7p4yn+Xunu7nhtjsStaPZCTLd58+Ep4ls94+tAebQguL2CVOKV3Ob2bUH 3wQBhQHDO3tCXK/Wn2lRFHaWwsFhzkPN6Yo9Mc/7M9YVgBXPhUeUD0s07GSu2AMS03 YgFFt/2xJa+BNC5CwntJ8EhbY40VuLtmSAQrXYaSTewQgX1A7QCgYWXJ4FYn3+VYyH RSg3gP+Bo9iDTybCP5tDYf74ENfMROOrvg3ZtipNv0ldGhMyO8XOA4oGiF/NjKA5DQ G2kw0lNs9K4VA== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 09/17] riscv: compat: syscall: Add entry.S implementation Date: Sat, 29 Jan 2022 20:17:20 +0800 Message-Id: <20220129121728.1079364-10-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041845_898260_2660B7D9 X-CRM114-Status: GOOD ( 10.39 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Implement the entry of compat_sys_call_table[] in asm. Ref to riscv-privileged spec 4.1.1 Supervisor Status Register (sstatus): BIT[32:33] = UXL[1:0]: - 1:32 - 2:64 - 3:128 Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/riscv/include/asm/csr.h | 7 +++++++ arch/riscv/kernel/entry.S | 18 ++++++++++++++++-- 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h index ae711692eec9..eed96fa62d66 100644 --- a/arch/riscv/include/asm/csr.h +++ b/arch/riscv/include/asm/csr.h @@ -36,6 +36,13 @@ #define SR_SD _AC(0x8000000000000000, UL) /* FS/XS dirty */ #endif +#ifdef CONFIG_COMPAT +#define SR_UXL _AC(0x300000000, UL) /* XLEN mask for U-mode */ +#define SR_UXL_32 _AC(0x100000000, UL) /* XLEN = 32 for U-mode */ +#define SR_UXL_64 _AC(0x200000000, UL) /* XLEN = 64 for U-mode */ +#define SR_UXL_SHIFT 32 +#endif + /* SATP flags */ #ifndef CONFIG_64BIT #define SATP_PPN _AC(0x003FFFFF, UL) diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S index ed29e9c8f660..1951743f09b3 100644 --- a/arch/riscv/kernel/entry.S +++ b/arch/riscv/kernel/entry.S @@ -207,13 +207,27 @@ check_syscall_nr: * Syscall number held in a7. * If syscall number is above allowed value, redirect to ni_syscall. */ - bgeu a7, t0, 1f + bgeu a7, t0, 3f +#ifdef CONFIG_COMPAT + REG_L s0, PT_STATUS(sp) + srli s0, s0, SR_UXL_SHIFT + andi s0, s0, (SR_UXL >> SR_UXL_SHIFT) + li t0, (SR_UXL_32 >> SR_UXL_SHIFT) + sub t0, s0, t0 + bnez t0, 1f + + /* Call compat_syscall */ + la s0, compat_sys_call_table + j 2f +1: +#endif /* Call syscall */ la s0, sys_call_table +2: slli t0, a7, RISCV_LGPTR add s0, s0, t0 REG_L s0, 0(s0) -1: +3: jalr s0 ret_from_syscall: From patchwork Sat Jan 29 12:17:21 2022 Content-Type: text/plain; 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Sat, 29 Jan 2022 12:18:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458731; bh=yfEc7zgR3yCBk8Yfn7aWFLEsFQj0j+xfa9v6cbpF6Vc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pdpjdGlMRcHuKdx8nas7nPKxC+10cSp8Gfll1lqGgxvkbB8YMYFeOfPCOFz0wFp+u 9/wmW0N0MD8TmY+dIFAVv+uY/IExYZRNW0QrxlGzf4RTm0Z6GxFGAc1jqtvqVIIhMp hrqQ5ZFYS2uBzY7I/NxA2chymSofMTj6klfxdNpbbHDT+y+GzHDaiCYfQ+qc2nJ+WK rPN+CcR7X4tlP/Io4QKbVho8BBzc8L27AzR3L8Vx/GRx0Tr9dBKAMH0FhiaM30UbJz TfMy5Ok9Ke1Ki9f6sQIR2w/W22msyhxmfPJYSbES6kdtGlinYTgx6ugDgmejCvK78W oZZH/n08IfzQg== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 10/17] riscv: compat: process: Add UXL_32 support in start_thread Date: Sat, 29 Jan 2022 20:17:21 +0800 Message-Id: <20220129121728.1079364-11-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041853_162052_EB0961E2 X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren If the current task is in COMPAT mode, set SR_UXL_32 in status for returning userspace. We need CONFIG _COMPAT to prevent compiling errors with rv32 defconfig. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Palmer Dabbelt --- arch/riscv/kernel/process.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 03ac3aa611f5..1a666ad299b4 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -97,6 +97,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc, } regs->epc = pc; regs->sp = sp; + +#ifdef CONFIG_COMPAT + if (is_compat_task()) + regs->status |= SR_UXL_32; +#endif } void flush_thread(void) From patchwork Sat Jan 29 12:17:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729523 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 08252C433EF for ; Sat, 29 Jan 2022 12:26:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4cAKFeD9eGO3zHedKF6uNY00DpkRqHP8iAMVoeslGms=; b=hJFA53OlrXMa/i beCVMETWjcke50CPNrxTNfzjYz33pFgwPKWPjtDQX2n8rGIIb/R+xx5riGBHBBveY3rftvMJBb3jv HerLR0HVCnZdi76hdXaUN6Et4S949O4ckIcC9wLCiw38q7v2qFEdoW4RxTvVEK5laGX/cfWBnj1VA Pqt+z+Id8+k2K7Wh0WjP3OCWm6dG0mqyhIqfhMuMdu448qhfQDtpj3QGIo8HHiKfz42HMdnO73oTG NVrxlTcxX0RfYLAb8sbrlaZxb3IK03m6/8Ne9evG90HRlmQC37lNfnLK2DnHtL6+z92owFgcEpwsa z/Hi4N68yXpc6fbh8Yeg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmoB-004gGI-Be; Sat, 29 Jan 2022 12:26:23 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmh0-004cNL-Fo; Sat, 29 Jan 2022 12:19:00 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E77D960C13; Sat, 29 Jan 2022 12:18:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 86DFAC340F7; Sat, 29 Jan 2022 12:18:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458737; bh=wJY/viP2IX4ozgXZJ3bElNJd5ppud36fV4/PGsPhwmA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NBDnwkyc7CcDA2PVE5uVZaPqgApwiIhf6+Kjo4YZSnL0fcciodrJInWZxy6ELSkwd FDRPsbDjlad4EF6A2puffTX3/+LBoFcZoyy9gbksEN3WNFi2gmsPtbhaEai53qNKSt h77qJcHY2ih4Is5+7NwKD7BqTxZYh2aUdrTGHE1lNXRianCuhIF7xkjmnIVGKuEvB+ mSZXdiN9HD7Ibh7Y2W8P017BQn7xuK/xDQ4FbFX3KLya5+Yi7Lh2kmdc3coXg2+x7O 1lHXylX511RbNy2eJePmR55RMH5ky3z12EOwfj8PZ0vaYqcxuCxtqEwN2hhgtvGtsv hDJuMszGaL/CQ== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 11/17] riscv: compat: Add elf.h implementation Date: Sat, 29 Jan 2022 20:17:22 +0800 Message-Id: <20220129121728.1079364-12-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041858_623127_BD5E1A8D X-CRM114-Status: GOOD ( 15.94 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Implement necessary type and macro for compat elf. See the code comment for detail. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann --- arch/riscv/include/asm/elf.h | 48 +++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h index f53c40026c7a..c1fc31629d40 100644 --- a/arch/riscv/include/asm/elf.h +++ b/arch/riscv/include/asm/elf.h @@ -8,6 +8,8 @@ #ifndef _ASM_RISCV_ELF_H #define _ASM_RISCV_ELF_H +#include +#include #include #include #include @@ -18,11 +20,13 @@ */ #define ELF_ARCH EM_RISCV +#ifndef ELF_CLASS #ifdef CONFIG_64BIT #define ELF_CLASS ELFCLASS64 #else #define ELF_CLASS ELFCLASS32 #endif +#endif #define ELF_DATA ELFDATA2LSB @@ -31,6 +35,15 @@ */ #define elf_check_arch(x) ((x)->e_machine == EM_RISCV) +#ifdef CONFIG_COMPAT +/* + * Use the same code with elf_check_arch, because elf32_hdr & + * elf64_hdr e_machine's offset are different. The checker is + * a little bit simple compare to other architectures. + */ +#define compat_elf_check_arch(x) ((x)->e_machine == EM_RISCV) +#endif + #define CORE_DUMP_USE_REGSET #define ELF_EXEC_PAGESIZE (PAGE_SIZE) @@ -43,8 +56,14 @@ #define ELF_ET_DYN_BASE ((TASK_SIZE / 3) * 2) #ifdef CONFIG_64BIT +#ifdef CONFIG_COMPAT +#define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \ + 0x7ff >> (PAGE_SHIFT - 12) : \ + 0x3ffff >> (PAGE_SHIFT - 12)) +#else #define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12)) #endif +#endif /* * This yields a mask that user programs can use to figure out what * instruction set this CPU supports. This could be done in user space, @@ -60,11 +79,19 @@ extern unsigned long elf_hwcap; */ #define ELF_PLATFORM (NULL) +#define COMPAT_ELF_PLATFORM (NULL) + #ifdef CONFIG_MMU #define ARCH_DLINFO \ do { \ + /* \ + * Note that we add ulong after elf_addr_t because \ + * casting current->mm->context.vdso triggers a cast \ + * warning of cast from pointer to integer for \ + * COMPAT ELFCLASS32. \ + */ \ NEW_AUX_ENT(AT_SYSINFO_EHDR, \ - (elf_addr_t)current->mm->context.vdso); \ + (elf_addr_t)(ulong)current->mm->context.vdso); \ NEW_AUX_ENT(AT_L1I_CACHESIZE, \ get_cache_size(1, CACHE_TYPE_INST)); \ NEW_AUX_ENT(AT_L1I_CACHEGEOMETRY, \ @@ -90,4 +117,23 @@ do { \ *(struct user_regs_struct *)regs; \ } while (0); +#ifdef CONFIG_COMPAT + +#define SET_PERSONALITY(ex) \ +do { if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ + set_thread_flag(TIF_32BIT); \ + else \ + clear_thread_flag(TIF_32BIT); \ + if (personality(current->personality) != PER_LINUX32) \ + set_personality(PER_LINUX | \ + (current->personality & (~PER_MASK))); \ +} while (0) + +#define COMPAT_ELF_ET_DYN_BASE ((TASK_SIZE_32 / 3) * 2) + +/* rv32 registers */ +typedef compat_ulong_t compat_elf_greg_t; +typedef compat_elf_greg_t compat_elf_gregset_t[ELF_NGREG]; + +#endif /* CONFIG_COMPAT */ #endif /* _ASM_RISCV_ELF_H */ From patchwork Sat Jan 29 12:17:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729524 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4850CC433EF for ; Sat, 29 Jan 2022 12:27:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Sat, 29 Jan 2022 12:18:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458743; bh=1q1Bx0MtzBKneJKjQO9ZDlnA1jNMeMLD3S0crCJkAiw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hft9dR7QcD5PWmUuxAazJ8R6rDfIFcLUqOXhoikikiinU08a+eZY4F/DXoOJrc2Us sYWaUplgGWqcyY3wB/h8QEpJsTg61FqavVCZkdt+1vTAKi+XNC2j2Iytv/iGdkh4s3 JDv3074n1Ahk4dbxUNsAtBteERVT0GtYYSEQS7jFHDkJ9YxONYpwmX0YwGFb1qQom2 ii58Gc1CuL3AeA426LnFFEp9i02k9N2QbP8iGMLOn1e8AAeTaAfez0Kcbx1aPZiZBg Nv2wXVnOCB26/MjhC0OI+HkCSKP48MipNSnQb1HJt304c/wq2j0K3FnSEpKC97koZP n18ZYGFUeYalQ== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 12/17] riscv: compat: vdso: Add rv32 VDSO base code implementation Date: Sat, 29 Jan 2022 20:17:23 +0800 Message-Id: <20220129121728.1079364-13-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041905_703855_8A4E1B05 X-CRM114-Status: GOOD ( 19.84 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren There is no vgettimeofday supported in rv32 that makes simple to generate rv32 vdso code which only needs riscv64 compiler. Other architectures need change compiler or -m (machine parameter) to support vdso32 compiling. If rv32 support vgettimeofday (which cause C compile) in future, we would add CROSS_COMPILE to support that makes more requirement on compiler enviornment. linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg: file format elf64-littleriscv Disassembly of section .text: 0000000000000800 <__vdso_rt_sigreturn>: 800: 08b00893 li a7,139 804: 00000073 ecall 808: 0000 unimp ... 000000000000080c <__vdso_getcpu>: 80c: 0a800893 li a7,168 810: 00000073 ecall 814: 8082 ret ... 0000000000000818 <__vdso_flush_icache>: 818: 10300893 li a7,259 81c: 00000073 ecall 820: 8082 ret linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg: file format elf32-littleriscv Disassembly of section .text: 00000800 <__vdso_rt_sigreturn>: 800: 08b00893 li a7,139 804: 00000073 ecall 808: 0000 unimp ... 0000080c <__vdso_getcpu>: 80c: 0a800893 li a7,168 810: 00000073 ecall 814: 8082 ret ... 00000818 <__vdso_flush_icache>: 818: 10300893 li a7,259 81c: 00000073 ecall 820: 8082 ret Finally, reuse all *.S from vdso in compat_vdso that makes implementation clear and readable. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Palmer Dabbelt --- arch/riscv/Makefile | 5 ++ arch/riscv/include/asm/vdso.h | 9 +++ arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/compat_vdso/.gitignore | 2 + arch/riscv/kernel/compat_vdso/Makefile | 68 +++++++++++++++++++ arch/riscv/kernel/compat_vdso/compat_vdso.S | 8 +++ .../kernel/compat_vdso/compat_vdso.lds.S | 3 + arch/riscv/kernel/compat_vdso/flush_icache.S | 3 + .../compat_vdso/gen_compat_vdso_offsets.sh | 5 ++ arch/riscv/kernel/compat_vdso/getcpu.S | 3 + arch/riscv/kernel/compat_vdso/note.S | 3 + arch/riscv/kernel/compat_vdso/rt_sigreturn.S | 3 + arch/riscv/kernel/vdso/vdso.S | 6 +- 13 files changed, 118 insertions(+), 1 deletion(-) create mode 100644 arch/riscv/kernel/compat_vdso/.gitignore create mode 100644 arch/riscv/kernel/compat_vdso/Makefile create mode 100644 arch/riscv/kernel/compat_vdso/compat_vdso.S create mode 100644 arch/riscv/kernel/compat_vdso/compat_vdso.lds.S create mode 100644 arch/riscv/kernel/compat_vdso/flush_icache.S create mode 100755 arch/riscv/kernel/compat_vdso/gen_compat_vdso_offsets.sh create mode 100644 arch/riscv/kernel/compat_vdso/getcpu.S create mode 100644 arch/riscv/kernel/compat_vdso/note.S create mode 100644 arch/riscv/kernel/compat_vdso/rt_sigreturn.S diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index a02e588c4947..f73d50552e09 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -106,12 +106,17 @@ libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a PHONY += vdso_install vdso_install: $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@ + $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ + $(build)=arch/riscv/kernel/compat_vdso $@) ifeq ($(KBUILD_EXTMOD),) ifeq ($(CONFIG_MMU),y) prepare: vdso_prepare vdso_prepare: prepare0 $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso include/generated/vdso-offsets.h + $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ + $(build)=arch/riscv/kernel/compat_vdso include/generated/compat_vdso-offsets.h) + endif endif diff --git a/arch/riscv/include/asm/vdso.h b/arch/riscv/include/asm/vdso.h index bc6f75f3a199..af981426fe0f 100644 --- a/arch/riscv/include/asm/vdso.h +++ b/arch/riscv/include/asm/vdso.h @@ -21,6 +21,15 @@ #define VDSO_SYMBOL(base, name) \ (void __user *)((unsigned long)(base) + __vdso_##name##_offset) + +#ifdef CONFIG_COMPAT +#include + +#define COMPAT_VDSO_SYMBOL(base, name) \ + (void __user *)((unsigned long)(base) + compat__vdso_##name##_offset) + +#endif /* CONFIG_COMPAT */ + #endif /* !__ASSEMBLY__ */ #endif /* CONFIG_MMU */ diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 954dc7043ad2..88e79f481c21 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -67,3 +67,4 @@ obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_EFI) += efi.o obj-$(CONFIG_COMPAT) += compat_syscall_table.o +obj-$(CONFIG_COMPAT) += compat_vdso/ diff --git a/arch/riscv/kernel/compat_vdso/.gitignore b/arch/riscv/kernel/compat_vdso/.gitignore new file mode 100644 index 000000000000..19d83d846c1e --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +compat_vdso.lds diff --git a/arch/riscv/kernel/compat_vdso/Makefile b/arch/riscv/kernel/compat_vdso/Makefile new file mode 100644 index 000000000000..7bbbbf94307f --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/Makefile @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: GPL-2.0-only + +# Absolute relocation type $(ARCH_REL_TYPE_ABS) needs to be defined before +# the inclusion of generic Makefile. +ARCH_REL_TYPE_ABS := R_RISCV_32|R_RISCV_64|R_RISCV_JUMP_SLOT +include $(srctree)/lib/vdso/Makefile +# Symbols present in the compat_vdso +compat_vdso-syms = rt_sigreturn +compat_vdso-syms += getcpu +compat_vdso-syms += flush_icache + +# Files to link into the compat_vdso +obj-compat_vdso = $(patsubst %, %.o, $(compat_vdso-syms)) note.o + +ccflags-y := -fno-stack-protector + +# Build rules +targets := $(obj-compat_vdso) compat_vdso.so compat_vdso.so.dbg compat_vdso.lds +obj-compat_vdso := $(addprefix $(obj)/, $(obj-compat_vdso)) + +obj-y += compat_vdso.o +CPPFLAGS_compat_vdso.lds += -P -C -U$(ARCH) + +# Disable profiling and instrumentation for VDSO code +GCOV_PROFILE := n +KCOV_INSTRUMENT := n +KASAN_SANITIZE := n +UBSAN_SANITIZE := n + +# Force dependency +$(obj)/compat_vdso.o: $(obj)/compat_vdso.so + +# link rule for the .so file, .lds has to be first +$(obj)/compat_vdso.so.dbg: $(obj)/compat_vdso.lds $(obj-compat_vdso) FORCE + $(call if_changed,compat_vdsold) +LDFLAGS_compat_vdso.so.dbg = -shared -S -soname=linux-compat_vdso.so.1 \ + --build-id=sha1 --hash-style=both --eh-frame-hdr + +# strip rule for the .so file +$(obj)/%.so: OBJCOPYFLAGS := -S +$(obj)/%.so: $(obj)/%.so.dbg FORCE + $(call if_changed,objcopy) + +# Generate VDSO offsets using helper script +gen-compat_vdsosym := $(srctree)/$(src)/gen_compat_vdso_offsets.sh +quiet_cmd_compat_vdsosym = VDSOSYM $@ + cmd_compat_vdsosym = $(NM) $< | $(gen-compat_vdsosym) | LC_ALL=C sort > $@ + +include/generated/compat_vdso-offsets.h: $(obj)/compat_vdso.so.dbg FORCE + $(call if_changed,compat_vdsosym) + +# actual build commands +# The DSO images are built using a special linker script +# Make sure only to export the intended __compat_vdso_xxx symbol offsets. +quiet_cmd_compat_vdsold = VDSOLD $@ + cmd_compat_vdsold = $(LD) $(ld_flags) -T $(filter-out FORCE,$^) -o $@.tmp && \ + $(OBJCOPY) $(patsubst %, -G __compat_vdso_%, $(compat_vdso-syms)) $@.tmp $@ && \ + rm $@.tmp + +# install commands for the unstripped file +quiet_cmd_compat_vdso_install = INSTALL $@ + cmd_compat_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/compat_vdso/$@ + +compat_vdso.so: $(obj)/compat_vdso.so.dbg + @mkdir -p $(MODLIB)/compat_vdso + $(call cmd,compat_vdso_install) + +compat_vdso_install: compat_vdso.so diff --git a/arch/riscv/kernel/compat_vdso/compat_vdso.S b/arch/riscv/kernel/compat_vdso/compat_vdso.S new file mode 100644 index 000000000000..fea4a8b0c45d --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/compat_vdso.S @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#define vdso_start compat_vdso_start +#define vdso_end compat_vdso_end + +#define __VDSO_PATH "arch/riscv/kernel/compat_vdso/compat_vdso.so" + +#include <../vdso/vdso.S> diff --git a/arch/riscv/kernel/compat_vdso/compat_vdso.lds.S b/arch/riscv/kernel/compat_vdso/compat_vdso.lds.S new file mode 100644 index 000000000000..02a9ec5dc7f6 --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/compat_vdso.lds.S @@ -0,0 +1,3 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <../vdso/vdso.lds.S> diff --git a/arch/riscv/kernel/compat_vdso/flush_icache.S b/arch/riscv/kernel/compat_vdso/flush_icache.S new file mode 100644 index 000000000000..88e21a84a974 --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/flush_icache.S @@ -0,0 +1,3 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <../vdso/flush_icache.S> diff --git a/arch/riscv/kernel/compat_vdso/gen_compat_vdso_offsets.sh b/arch/riscv/kernel/compat_vdso/gen_compat_vdso_offsets.sh new file mode 100755 index 000000000000..8ac070c783b3 --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/gen_compat_vdso_offsets.sh @@ -0,0 +1,5 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +LC_ALL=C +sed -n -e 's/^[0]\+\(0[0-9a-fA-F]*\) . \(__vdso_[a-zA-Z0-9_]*\)$/\#define compat\2_offset\t0x\1/p' diff --git a/arch/riscv/kernel/compat_vdso/getcpu.S b/arch/riscv/kernel/compat_vdso/getcpu.S new file mode 100644 index 000000000000..946449a15a94 --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/getcpu.S @@ -0,0 +1,3 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <../vdso/getcpu.S> diff --git a/arch/riscv/kernel/compat_vdso/note.S b/arch/riscv/kernel/compat_vdso/note.S new file mode 100644 index 000000000000..67c50898b8e5 --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/note.S @@ -0,0 +1,3 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <../vdso/note.S> diff --git a/arch/riscv/kernel/compat_vdso/rt_sigreturn.S b/arch/riscv/kernel/compat_vdso/rt_sigreturn.S new file mode 100644 index 000000000000..f4c98f18c053 --- /dev/null +++ b/arch/riscv/kernel/compat_vdso/rt_sigreturn.S @@ -0,0 +1,3 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <../vdso/rt_sigreturn.S> diff --git a/arch/riscv/kernel/vdso/vdso.S b/arch/riscv/kernel/vdso/vdso.S index df222245be05..83f1c899e8d8 100644 --- a/arch/riscv/kernel/vdso/vdso.S +++ b/arch/riscv/kernel/vdso/vdso.S @@ -7,12 +7,16 @@ #include #include +#ifndef __VDSO_PATH +#define __VDSO_PATH "arch/riscv/kernel/vdso/vdso.so" +#endif + __PAGE_ALIGNED_DATA .globl vdso_start, vdso_end .balign PAGE_SIZE vdso_start: - .incbin "arch/riscv/kernel/vdso/vdso.so" + .incbin __VDSO_PATH .balign PAGE_SIZE vdso_end: From patchwork Sat Jan 29 12:17:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 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linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 13/17] riscv: compat: vdso: Add setup additional pages implementation Date: Sat, 29 Jan 2022 20:17:24 +0800 Message-Id: <20220129121728.1079364-14-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041913_085772_DD701522 X-CRM114-Status: GOOD ( 21.59 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Reconstruct __setup_additional_pages() by appending vdso info pointer argument to meet compat_vdso_info requirement. And change vm_special_mapping *dm, *cm initialization into static. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Palmer Dabbelt --- arch/riscv/include/asm/elf.h | 5 ++ arch/riscv/include/asm/mmu.h | 1 + arch/riscv/kernel/vdso.c | 104 +++++++++++++++++++++++++---------- 3 files changed, 81 insertions(+), 29 deletions(-) diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h index c1fc31629d40..6f374e6bc786 100644 --- a/arch/riscv/include/asm/elf.h +++ b/arch/riscv/include/asm/elf.h @@ -135,5 +135,10 @@ do { if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ typedef compat_ulong_t compat_elf_greg_t; typedef compat_elf_greg_t compat_elf_gregset_t[ELF_NGREG]; +extern int compat_arch_setup_additional_pages(struct linux_binprm *bprm, + int uses_interp); +#define compat_arch_setup_additional_pages \ + compat_arch_setup_additional_pages + #endif /* CONFIG_COMPAT */ #endif /* _ASM_RISCV_ELF_H */ diff --git a/arch/riscv/include/asm/mmu.h b/arch/riscv/include/asm/mmu.h index 0099dc116168..cedcf8ea3c76 100644 --- a/arch/riscv/include/asm/mmu.h +++ b/arch/riscv/include/asm/mmu.h @@ -16,6 +16,7 @@ typedef struct { atomic_long_t id; #endif void *vdso; + void *vdso_info; #ifdef CONFIG_SMP /* A local icache flush is needed before user execution can resume. */ cpumask_t icache_stale_mask; diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c index a9436a65161a..deca69524799 100644 --- a/arch/riscv/kernel/vdso.c +++ b/arch/riscv/kernel/vdso.c @@ -23,6 +23,9 @@ struct vdso_data { #endif extern char vdso_start[], vdso_end[]; +#ifdef CONFIG_COMPAT +extern char compat_vdso_start[], compat_vdso_end[]; +#endif enum vvar_pages { VVAR_DATA_PAGE_OFFSET, @@ -30,6 +33,11 @@ enum vvar_pages { VVAR_NR_PAGES, }; +enum rv_vdso_map { + RV_VDSO_MAP_VVAR, + RV_VDSO_MAP_VDSO, +}; + #define VVAR_SIZE (VVAR_NR_PAGES << PAGE_SHIFT) /* @@ -52,12 +60,6 @@ struct __vdso_info { struct vm_special_mapping *cm; }; -static struct __vdso_info vdso_info __ro_after_init = { - .name = "vdso", - .vdso_code_start = vdso_start, - .vdso_code_end = vdso_end, -}; - static int vdso_mremap(const struct vm_special_mapping *sm, struct vm_area_struct *new_vma) { @@ -66,35 +68,35 @@ static int vdso_mremap(const struct vm_special_mapping *sm, return 0; } -static int __init __vdso_init(void) +static int __init __vdso_init(struct __vdso_info *vdso_info) { unsigned int i; struct page **vdso_pagelist; unsigned long pfn; - if (memcmp(vdso_info.vdso_code_start, "\177ELF", 4)) { + if (memcmp(vdso_info->vdso_code_start, "\177ELF", 4)) { pr_err("vDSO is not a valid ELF object!\n"); return -EINVAL; } - vdso_info.vdso_pages = ( - vdso_info.vdso_code_end - - vdso_info.vdso_code_start) >> + vdso_info->vdso_pages = ( + vdso_info->vdso_code_end - + vdso_info->vdso_code_start) >> PAGE_SHIFT; - vdso_pagelist = kcalloc(vdso_info.vdso_pages, + vdso_pagelist = kcalloc(vdso_info->vdso_pages, sizeof(struct page *), GFP_KERNEL); if (vdso_pagelist == NULL) return -ENOMEM; /* Grab the vDSO code pages. */ - pfn = sym_to_pfn(vdso_info.vdso_code_start); + pfn = sym_to_pfn(vdso_info->vdso_code_start); - for (i = 0; i < vdso_info.vdso_pages; i++) + for (i = 0; i < vdso_info->vdso_pages; i++) vdso_pagelist[i] = pfn_to_page(pfn + i); - vdso_info.cm->pages = vdso_pagelist; + vdso_info->cm->pages = vdso_pagelist; return 0; } @@ -116,13 +118,14 @@ int vdso_join_timens(struct task_struct *task, struct time_namespace *ns) { struct mm_struct *mm = task->mm; struct vm_area_struct *vma; + struct __vdso_info *vdso_info = mm->context.vdso_info; mmap_read_lock(mm); for (vma = mm->mmap; vma; vma = vma->vm_next) { unsigned long size = vma->vm_end - vma->vm_start; - if (vma_is_special_mapping(vma, vdso_info.dm)) + if (vma_is_special_mapping(vma, vdso_info->dm)) zap_page_range(vma, vma->vm_start, size); } @@ -187,11 +190,6 @@ static vm_fault_t vvar_fault(const struct vm_special_mapping *sm, return vmf_insert_pfn(vma, vmf->address, pfn); } -enum rv_vdso_map { - RV_VDSO_MAP_VVAR, - RV_VDSO_MAP_VDSO, -}; - static struct vm_special_mapping rv_vdso_maps[] __ro_after_init = { [RV_VDSO_MAP_VVAR] = { .name = "[vvar]", @@ -203,25 +201,53 @@ static struct vm_special_mapping rv_vdso_maps[] __ro_after_init = { }, }; +static struct __vdso_info vdso_info __ro_after_init = { + .name = "vdso", + .vdso_code_start = vdso_start, + .vdso_code_end = vdso_end, + .dm = &rv_vdso_maps[RV_VDSO_MAP_VVAR], + .cm = &rv_vdso_maps[RV_VDSO_MAP_VDSO], +}; + +#ifdef CONFIG_COMPAT +static struct __vdso_info compat_vdso_info __ro_after_init = { + .name = "compat_vdso", + .vdso_code_start = compat_vdso_start, + .vdso_code_end = compat_vdso_end, + .dm = &rv_vdso_maps[RV_VDSO_MAP_VVAR], + .cm = &rv_vdso_maps[RV_VDSO_MAP_VDSO], +}; +#endif + static int __init vdso_init(void) { - vdso_info.dm = &rv_vdso_maps[RV_VDSO_MAP_VVAR]; - vdso_info.cm = &rv_vdso_maps[RV_VDSO_MAP_VDSO]; + int ret; + + ret = __vdso_init(&vdso_info); + if (ret) + goto out; - return __vdso_init(); +#ifdef CONFIG_COMPAT + ret = __vdso_init(&compat_vdso_info); + if (ret) + goto out; +#endif +out: + return ret; } arch_initcall(vdso_init); static int __setup_additional_pages(struct mm_struct *mm, struct linux_binprm *bprm, - int uses_interp) + int uses_interp, + struct __vdso_info *vdso_info) { unsigned long vdso_base, vdso_text_len, vdso_mapping_len; void *ret; BUILD_BUG_ON(VVAR_NR_PAGES != __VVAR_PAGES); - vdso_text_len = vdso_info.vdso_pages << PAGE_SHIFT; + vdso_text_len = vdso_info->vdso_pages << PAGE_SHIFT; /* Be sure to map the data page */ vdso_mapping_len = vdso_text_len + VVAR_SIZE; @@ -232,16 +258,18 @@ static int __setup_additional_pages(struct mm_struct *mm, } ret = _install_special_mapping(mm, vdso_base, VVAR_SIZE, - (VM_READ | VM_MAYREAD | VM_PFNMAP), vdso_info.dm); + (VM_READ | VM_MAYREAD | VM_PFNMAP), vdso_info->dm); if (IS_ERR(ret)) goto up_fail; vdso_base += VVAR_SIZE; mm->context.vdso = (void *)vdso_base; + mm->context.vdso_info = (void *)vdso_info; + ret = _install_special_mapping(mm, vdso_base, vdso_text_len, (VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC), - vdso_info.cm); + vdso_info->cm); if (IS_ERR(ret)) goto up_fail; @@ -253,6 +281,24 @@ static int __setup_additional_pages(struct mm_struct *mm, return PTR_ERR(ret); } +#ifdef CONFIG_COMPAT +int compat_arch_setup_additional_pages(struct linux_binprm *bprm, + int uses_interp) +{ + struct mm_struct *mm = current->mm; + int ret; + + if (mmap_write_lock_killable(mm)) + return -EINTR; + + ret = __setup_additional_pages(mm, bprm, uses_interp, + &compat_vdso_info); + mmap_write_unlock(mm); + + return ret; +} +#endif + int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mm_struct *mm = current->mm; @@ -261,7 +307,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) if (mmap_write_lock_killable(mm)) return -EINTR; - ret = __setup_additional_pages(mm, bprm, uses_interp); + ret = __setup_additional_pages(mm, bprm, uses_interp, &vdso_info); mmap_write_unlock(mm); return ret; From patchwork Sat Jan 29 12:17:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729530 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1928AC433F5 for ; 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Sat, 29 Jan 2022 12:29:41 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmhJ-004cYa-Qc; Sat, 29 Jan 2022 12:19:21 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 319F060BA0; Sat, 29 Jan 2022 12:19:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0CD9C340EB; Sat, 29 Jan 2022 12:19:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458756; bh=c5b0OtGYsiLuv8HExBqo/wHQpxjCxbIXMomdAS0MufI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cXpa23LuJUVLckgNH5XFHO6/aD2baI55jZ2h3Aswy4pCvKPMClaSeoiS/S8EejOHf zaGH47LtY+rm8c6LjnNbPF2zZOuV7EfRlKFhqazunbGa+HUwKe/CFwab/3PlSEgX2u 6PibsrrLzNtbU4f4PNJq9rrMDqeQVRSZyOuMKOJobR35dXkQtG2sXm3/jsZy9E2Szv euGawEp7yo/OBrfJAao2o5kf25dy79WpOWL3c8tExvR9mtH+OSAy4qTtMm9nljbW1q E18gBLWfYG14pYzUU86k8nEyGVP3EsPas+WAaMiJzm4DygZhbScB6v3v1QmJI/yw8N FIrGADPiT7aEA== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 14/17] riscv: compat: signal: Add rt_frame implementation Date: Sat, 29 Jan 2022 20:17:25 +0800 Message-Id: <20220129121728.1079364-15-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041918_029700_E9B206C4 X-CRM114-Status: GOOD ( 29.20 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Implement compat_setup_rt_frame for sigcontext save & restore. The main process is the same with signal, but the rv32 pt_regs' size is different from rv64's, so we needs convert them. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Palmer Dabbelt --- arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/compat_signal.c | 243 ++++++++++++++++++++++++++++++ arch/riscv/kernel/signal.c | 13 +- 3 files changed, 256 insertions(+), 1 deletion(-) create mode 100644 arch/riscv/kernel/compat_signal.c diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 88e79f481c21..a46f9807c59e 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -67,4 +67,5 @@ obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_EFI) += efi.o obj-$(CONFIG_COMPAT) += compat_syscall_table.o +obj-$(CONFIG_COMPAT) += compat_signal.o obj-$(CONFIG_COMPAT) += compat_vdso/ diff --git a/arch/riscv/kernel/compat_signal.c b/arch/riscv/kernel/compat_signal.c new file mode 100644 index 000000000000..7041742ded08 --- /dev/null +++ b/arch/riscv/kernel/compat_signal.c @@ -0,0 +1,243 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define COMPAT_DEBUG_SIG 0 + +struct compat_sigcontext { + struct compat_user_regs_struct sc_regs; + union __riscv_fp_state sc_fpregs; +}; + +struct compat_ucontext { + compat_ulong_t uc_flags; + struct compat_ucontext *uc_link; + compat_stack_t uc_stack; + sigset_t uc_sigmask; + /* There's some padding here to allow sigset_t to be expanded in the + * future. Though this is unlikely, other architectures put uc_sigmask + * at the end of this structure and explicitly state it can be + * expanded, so we didn't want to box ourselves in here. */ + __u8 __unused[1024 / 8 - sizeof(sigset_t)]; + /* We can't put uc_sigmask at the end of this structure because we need + * to be able to expand sigcontext in the future. For example, the + * vector ISA extension will almost certainly add ISA state. We want + * to ensure all user-visible ISA state can be saved and restored via a + * ucontext, so we're putting this at the end in order to allow for + * infinite extensibility. Since we know this will be extended and we + * assume sigset_t won't be extended an extreme amount, we're + * prioritizing this. */ + struct compat_sigcontext uc_mcontext; +}; + +struct compat_rt_sigframe { + struct compat_siginfo info; + struct compat_ucontext uc; +}; + +#ifdef CONFIG_FPU +static long compat_restore_fp_state(struct pt_regs *regs, + union __riscv_fp_state __user *sc_fpregs) +{ + long err; + struct __riscv_d_ext_state __user *state = &sc_fpregs->d; + size_t i; + + err = __copy_from_user(¤t->thread.fstate, state, sizeof(*state)); + if (unlikely(err)) + return err; + + fstate_restore(current, regs); + + /* We support no other extension state at this time. */ + for (i = 0; i < ARRAY_SIZE(sc_fpregs->q.reserved); i++) { + u32 value; + + err = __get_user(value, &sc_fpregs->q.reserved[i]); + if (unlikely(err)) + break; + if (value != 0) + return -EINVAL; + } + + return err; +} + +static long compat_save_fp_state(struct pt_regs *regs, + union __riscv_fp_state __user *sc_fpregs) +{ + long err; + struct __riscv_d_ext_state __user *state = &sc_fpregs->d; + size_t i; + + fstate_save(current, regs); + err = __copy_to_user(state, ¤t->thread.fstate, sizeof(*state)); + if (unlikely(err)) + return err; + + /* We support no other extension state at this time. */ + for (i = 0; i < ARRAY_SIZE(sc_fpregs->q.reserved); i++) { + err = __put_user(0, &sc_fpregs->q.reserved[i]); + if (unlikely(err)) + break; + } + + return err; +} +#else +#define compat_save_fp_state(task, regs) (0) +#define compat_restore_fp_state(task, regs) (0) +#endif + +static long compat_restore_sigcontext(struct pt_regs *regs, + struct compat_sigcontext __user *sc) +{ + long err; + struct compat_user_regs_struct cregs; + + /* sc_regs is structured the same as the start of pt_regs */ + err = __copy_from_user(&cregs, &sc->sc_regs, sizeof(sc->sc_regs)); + + cregs_to_regs(&cregs, regs); + + /* Restore the floating-point state. */ + if (has_fpu()) + err |= compat_restore_fp_state(regs, &sc->sc_fpregs); + return err; +} + +COMPAT_SYSCALL_DEFINE0(rt_sigreturn) +{ + struct pt_regs *regs = current_pt_regs(); + struct compat_rt_sigframe __user *frame; + struct task_struct *task; + sigset_t set; + + /* Always make any pending restarted system calls return -EINTR */ + current->restart_block.fn = do_no_restart_syscall; + + frame = (struct compat_rt_sigframe __user *)regs->sp; + + if (!access_ok(frame, sizeof(*frame))) + goto badframe; + + if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) + goto badframe; + + set_current_blocked(&set); + + if (compat_restore_sigcontext(regs, &frame->uc.uc_mcontext)) + goto badframe; + + if (compat_restore_altstack(&frame->uc.uc_stack)) + goto badframe; + + return regs->a0; + +badframe: + task = current; + if (show_unhandled_signals) { + pr_info_ratelimited( + "%s[%d]: bad frame in %s: frame=%p pc=%p sp=%p\n", + task->comm, task_pid_nr(task), __func__, + frame, (void *)regs->epc, (void *)regs->sp); + } + force_sig(SIGSEGV); + return 0; +} + +static long compat_setup_sigcontext(struct compat_rt_sigframe __user *frame, + struct pt_regs *regs) +{ + struct compat_sigcontext __user *sc = &frame->uc.uc_mcontext; + struct compat_user_regs_struct cregs; + long err; + + regs_to_cregs(&cregs, regs); + + /* sc_regs is structured the same as the start of pt_regs */ + err = __copy_to_user(&sc->sc_regs, &cregs, sizeof(sc->sc_regs)); + /* Save the floating-point state. */ + if (has_fpu()) + err |= compat_save_fp_state(regs, &sc->sc_fpregs); + return err; +} + +static inline void __user *compat_get_sigframe(struct ksignal *ksig, + struct pt_regs *regs, size_t framesize) +{ + unsigned long sp; + /* Default to using normal stack */ + sp = regs->sp; + + /* + * If we are on the alternate signal stack and would overflow it, don't. + * Return an always-bogus address instead so we will die with SIGSEGV. + */ + if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize))) + return (void __user __force *)(-1UL); + + /* This is the X/Open sanctioned signal stack switching. */ + sp = sigsp(sp, ksig) - framesize; + + /* Align the stack frame. */ + sp &= ~0xfUL; + + return (void __user *)sp; +} + +int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) +{ + struct compat_rt_sigframe __user *frame; + long err = 0; + + frame = compat_get_sigframe(ksig, regs, sizeof(*frame)); + if (!access_ok(frame, sizeof(*frame))) + return -EFAULT; + + err |= copy_siginfo_to_user32(&frame->info, &ksig->info); + + /* Create the ucontext. */ + err |= __put_user(0, &frame->uc.uc_flags); + err |= __put_user(NULL, &frame->uc.uc_link); + err |= __compat_save_altstack(&frame->uc.uc_stack, regs->sp); + err |= compat_setup_sigcontext(frame, regs); + err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); + if (err) + return -EFAULT; + + regs->ra = (unsigned long)COMPAT_VDSO_SYMBOL( + current->mm->context.vdso, rt_sigreturn); + + /* + * Set up registers for signal handler. + * Registers that we don't modify keep the value they had from + * user-space at the time we took the signal. + * We always pass siginfo and mcontext, regardless of SA_SIGINFO, + * since some things rely on this (e.g. glibc's debug/segfault.c). + */ + regs->epc = (unsigned long)ksig->ka.sa.sa_handler; + regs->sp = (unsigned long)frame; + regs->a0 = ksig->sig; /* a0: signal number */ + regs->a1 = (unsigned long)(&frame->info); /* a1: siginfo pointer */ + regs->a2 = (unsigned long)(&frame->uc); /* a2: ucontext pointer */ + +#if COMPAT_DEBUG_SIG + pr_info("SIG deliver (%s:%d): sig=%d pc=%p ra=%p sp=%p\n", + current->comm, task_pid_nr(current), ksig->sig, + (void *)regs->epc, (void *)regs->ra, frame); +#endif + + return 0; +} diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c index c2d5ecbe5526..27d8f39228c4 100644 --- a/arch/riscv/kernel/signal.c +++ b/arch/riscv/kernel/signal.c @@ -6,6 +6,7 @@ * Copyright (C) 2012 Regents of the University of California */ +#include #include #include #include @@ -229,6 +230,11 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, return 0; } +#ifdef CONFIG_COMPAT +extern int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs); +#endif + static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); @@ -258,8 +264,13 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) } } +#ifdef CONFIG_COMPAT /* Set up the stack frame */ - ret = setup_rt_frame(ksig, oldset, regs); + if (is_compat_task()) + ret = compat_setup_rt_frame(ksig, oldset, regs); + else +#endif + ret = setup_rt_frame(ksig, oldset, regs); signal_setup_done(ret, ksig, 0); } From patchwork Sat Jan 29 12:17:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729531 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 725BBC433F5 for ; Sat, 29 Jan 2022 12:30:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; 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Sat, 29 Jan 2022 12:19:25 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7CBD360C3A; Sat, 29 Jan 2022 12:19:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D2A0C340E5; Sat, 29 Jan 2022 12:19:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458762; bh=qWtb6+cgEOxIhx/CvZddYYzDKOlMelvnzAQMykw6uB0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m5J//ohlceAdks3ZShiqFPnKC4d/Xg1X/uzZV83pQaEZfMlwqoDk92/wlReoKkpA4 8TM3aionMNLtK78fMczZsndv/z1yDzu0EoGEHtbFxMeZXUosyPFCVzmre2KkVlAG9i SzXTlIV1KSsf2yAJuF7UO04+o+Zi0skPJNAkpYF4oDM4OWSBh3pYBMYLmfgCBqS3Ea gtFrWs6wAqO6bJmDBWnwBtyE7EN3rUMWQ6V3KF+JaqVx3uxjgpMVr/TozHhXHL0RoZ 27ySINuK/vDPPkasYxg9obfnDgBLg1OpNlt54BMGZEFQJa+1913Tb5NAwdvu98uTeE mBnDl7j/LzrXw== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 15/17] riscv: compat: ptrace: Add compat_arch_ptrace implement Date: Sat, 29 Jan 2022 20:17:26 +0800 Message-Id: <20220129121728.1079364-16-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041924_158722_891109A7 X-CRM114-Status: GOOD ( 15.58 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Now, you can use native gdb on riscv64 for rv32 app debugging. $ uname -a Linux buildroot 5.16.0-rc4-00036-gbef6b82fdf23-dirty #53 SMP Mon Dec 20 23:06:53 CST 2021 riscv64 GNU/Linux $ cat /proc/cpuinfo processor : 0 hart : 0 isa : rv64imafdcsuh mmu : sv48 $ file /bin/busybox /bin/busybox: setuid ELF 32-bit LSB shared object, UCB RISC-V, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-riscv32-ilp32d.so.1, for GNU/Linux 5.15.0, stripped $ file /usr/bin/gdb /usr/bin/gdb: ELF 32-bit LSB shared object, UCB RISC-V, version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld-linux-riscv32-ilp32d.so.1, for GNU/Linux 5.15.0, stripped $ /usr/bin/gdb /bin/busybox GNU gdb (GDB) 10.2 Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later ... Reading symbols from /bin/busybox... (No debugging symbols found in /bin/busybox) (gdb) b main Breakpoint 1 at 0x8ddc (gdb) r Starting program: /bin/busybox Failed to read a valid object file image from memory. Breakpoint 1, 0x555a8ddc in main () (gdb) i r ra 0x77df0b74 0x77df0b74 sp 0x7fdd3d10 0x7fdd3d10 gp 0x5567e800 0x5567e800 tp 0x77f64280 0x77f64280 t0 0x0 0 t1 0x555a6fac 1431990188 t2 0x77dd8db4 2011008436 fp 0x7fdd3e34 0x7fdd3e34 s1 0x7fdd3e34 2145205812 a0 0xffffffff -1 a1 0x2000 8192 a2 0x7fdd3e3c 2145205820 a3 0x0 0 a4 0x7fdd3d30 2145205552 a5 0x555a8dc0 1431997888 a6 0x77f2c170 2012397936 a7 0x6a7c7a2f 1786542639 s2 0x0 0 s3 0x0 0 s4 0x555a8dc0 1431997888 s5 0x77f8a3a8 2012783528 s6 0x7fdd3e3c 2145205820 s7 0x5567cecc 1432866508 --Type for more, q to quit, c to continue without paging-- s8 0x1 1 s9 0x0 0 s10 0x55634448 1432568904 s11 0x0 0 t3 0x77df0bb8 2011106232 t4 0x42fc 17148 t5 0x0 0 t6 0x40 64 pc 0x555a8ddc 0x555a8ddc (gdb) si 0x555a78f0 in mallopt@plt () (gdb) c Continuing. BusyBox v1.34.1 (2021-12-19 22:39:48 CST) multi-call binary. BusyBox is copyrighted by many authors between 1998-2015. Licensed under GPLv2. See source distribution for detailed copyright notices. Usage: busybox [function [arguments]...] or: busybox --list[-full] ... [Inferior 1 (process 107) exited normally] (gdb) q Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Palmer Dabbelt --- arch/riscv/kernel/ptrace.c | 87 +++++++++++++++++++++++++++++++++++--- 1 file changed, 82 insertions(+), 5 deletions(-) diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c index a89243730153..bb387593a121 100644 --- a/arch/riscv/kernel/ptrace.c +++ b/arch/riscv/kernel/ptrace.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -111,11 +112,6 @@ static const struct user_regset_view riscv_user_native_view = { .n = ARRAY_SIZE(riscv_user_regset), }; -const struct user_regset_view *task_user_regset_view(struct task_struct *task) -{ - return &riscv_user_native_view; -} - struct pt_regs_offset { const char *name; int offset; @@ -273,3 +269,84 @@ __visible void do_syscall_trace_exit(struct pt_regs *regs) trace_sys_exit(regs, regs_return_value(regs)); #endif } + +#ifdef CONFIG_COMPAT +static int compat_riscv_gpr_get(struct task_struct *target, + const struct user_regset *regset, + struct membuf to) +{ + struct compat_user_regs_struct cregs; + + regs_to_cregs(&cregs, task_pt_regs(target)); + + return membuf_write(&to, &cregs, + sizeof(struct compat_user_regs_struct)); +} + +static int compat_riscv_gpr_set(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + int ret; + struct compat_user_regs_struct cregs; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &cregs, 0, -1); + + cregs_to_regs(&cregs, task_pt_regs(target)); + + return ret; +} + +static const struct user_regset compat_riscv_user_regset[] = { + [REGSET_X] = { + .core_note_type = NT_PRSTATUS, + .n = ELF_NGREG, + .size = sizeof(compat_elf_greg_t), + .align = sizeof(compat_elf_greg_t), + .regset_get = compat_riscv_gpr_get, + .set = compat_riscv_gpr_set, + }, +#ifdef CONFIG_FPU + [REGSET_F] = { + .core_note_type = NT_PRFPREG, + .n = ELF_NFPREG, + .size = sizeof(elf_fpreg_t), + .align = sizeof(elf_fpreg_t), + .regset_get = riscv_fpr_get, + .set = riscv_fpr_set, + }, +#endif +}; + +static const struct user_regset_view compat_riscv_user_native_view = { + .name = "riscv", + .e_machine = EM_RISCV, + .regsets = compat_riscv_user_regset, + .n = ARRAY_SIZE(compat_riscv_user_regset), +}; + +long compat_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t caddr, compat_ulong_t cdata) +{ + long ret = -EIO; + + switch (request) { + default: + ret = compat_ptrace_request(child, request, caddr, cdata); + break; + } + + return ret; +} +#endif /* CONFIG_COMPAT */ + +const struct user_regset_view *task_user_regset_view(struct task_struct *task) +{ +#ifdef CONFIG_COMPAT + if (test_tsk_thread_flag(task, TIF_32BIT)) + return &compat_riscv_user_native_view; + else +#endif + return &riscv_user_native_view; +} From patchwork Sat Jan 29 12:17:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729532 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B3007C433EF for ; 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Sat, 29 Jan 2022 12:31:46 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDmhW-004cgu-EF; Sat, 29 Jan 2022 12:19:33 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id DB04B60C3D; Sat, 29 Jan 2022 12:19:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7BD13C340EB; Sat, 29 Jan 2022 12:19:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458769; bh=TkpF1bKo3WdGRomoemQuFbEscNstYtWDC/I865vm/5o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QiH+nw9zDyHJc3hC6rPAh5+xb6u2xZ68pGImJn0IoRtvLm+UdUZQqHHisi2Or1C0/ Qy8wvZ10rC3gyD1YLxRy73gMRgBDCbRa2TJ2fRi7/Cz51U+AbgCYjKYnIxjPQLiSew OmfjJyfd4DyNd4P+DhZKHvaD0WGYt/G57Vj0cBmt2mSxvofduwGjquK5Q6PwGBLkQu 9/40XHIn/rlwq6mrWrKQMr8Gjsd40DhTRuLLtALG/D/VliYRU+vrMDFH1MepxwLiAg GtROPKDkeWzGrG9r9guU+xlU8y4sEdYp8unqyYzNENBzjJ6rckmZkhMNSSAQ0kWLvh kyBGR8NbeOYhg== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 16/17] riscv: compat: Add COMPAT Kbuild skeletal support Date: Sat, 29 Jan 2022 20:17:27 +0800 Message-Id: <20220129121728.1079364-17-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041930_547127_FE58038A X-CRM114-Status: GOOD ( 10.34 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Adds initial skeletal COMPAT Kbuild (Runing 32bit U-mode on 64bit S-mode) support. - Setup kconfig & dummy functions for compiling. - Implement compat_start_thread by the way. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann Cc: Palmer Dabbelt --- arch/riscv/Kconfig | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 5adcbd9b5e88..6f11df8c189f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -73,6 +73,7 @@ config RISCV select HAVE_ARCH_KGDB if !XIP_KERNEL select HAVE_ARCH_KGDB_QXFER_PKT select HAVE_ARCH_MMAP_RND_BITS if MMU + select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT && MMU @@ -123,12 +124,18 @@ config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT default 8 +config ARCH_MMAP_RND_COMPAT_BITS_MIN + default 8 + # max bits determined by the following formula: # VA_BITS - PAGE_SHIFT - 3 config ARCH_MMAP_RND_BITS_MAX default 24 if 64BIT # SV39 based default 17 +config ARCH_MMAP_RND_COMPAT_BITS_MAX + default 17 + # set if we run in machine mode, cleared if we run in supervisor mode config RISCV_M_MODE bool @@ -406,6 +413,18 @@ config CRASH_DUMP For more details see Documentation/admin-guide/kdump/kdump.rst +config COMPAT + bool "Kernel support for 32-bit U-mode" + default 64BIT + depends on 64BIT && MMU + help + This option enables support for a 32-bit U-mode running under a 64-bit + kernel at S-mode. riscv32-specific components such as system calls, + the user helper functions (vdso), signal rt_frame functions and the + ptrace interface are handled appropriately by the kernel. + + If you want to execute 32-bit userspace applications, say Y. + endmenu menu "Boot options" From patchwork Sat Jan 29 12:17:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729533 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3EC27C433EF for ; Sat, 29 Jan 2022 12:33:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1SLW1GyhYCW7OtmvdirVFxrdoAE+TfSy8r6QiH+TUz8=; 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Sat, 29 Jan 2022 12:19:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458775; bh=J65VF607Au+lXQP+8mKXArK6fDS/9hBK5qV8mWwi4fM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hNexS/zfRcpJQb9tKy9uq83XaLRwvXw8cgOzwvW9WGM8zvfpjFXUMmOHV7wpYFjBp R4zZeyMkYScimS69R0rmPSDQiLeoyC4tNXnoZopSCmrKnJ8CXAdNqsBzb1ez7gi6HN 0Tyxrhtp5Mi9AKTv9oQEZpKazjfoFIi00SyeBHUBliq5cJENB09Lf+Pi7mLjn7YNBT aPsDFmioeyhcJlUMm3AZSlSK9ucd2doig8+iZU2Wyg6rU0gRs5rtmxtw+5HhoIUawl 66/hvRTiAyCZ/rB8cQbfhby7/PO6/fXx4w8NqSqdB00+lX+6mDb6AecdxvXlTOakZB Pa6OVe+KOUrow== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 17/17] KVM: compat: riscv: Prevent KVM_COMPAT from being selected Date: Sat, 29 Jan 2022 20:17:28 +0800 Message-Id: <20220129121728.1079364-18-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220129_041938_606556_7E5D2775 X-CRM114-Status: GOOD ( 10.55 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Current riscv doesn't support the 32bit KVM API. Let's make it clear by not selecting KVM_COMPAT. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann --- virt/kvm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index f4834c20e4a6..a8c5c9f06b3c 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -53,7 +53,7 @@ config KVM_GENERIC_DIRTYLOG_READ_PROTECT config KVM_COMPAT def_bool y - depends on KVM && COMPAT && !(S390 || ARM64) + depends on KVM && COMPAT && !(S390 || ARM64 || RISCV) config HAVE_KVM_IRQ_BYPASS bool