From patchwork Mon Apr 29 12:16:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13646848 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 57B18C04FFE for ; Mon, 29 Apr 2024 12:19:28 +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=5TxCX/TAUJT2lexTBQ01fpO2yk6rl1eYna5dGV2TUuY=; b=eF7iNTGM6t0vbv audS8TrBb35utEQ4efNsGY86vEwPfkFWxO+71i1bULhsESJncIA05dZ+ui0ubhZC7wa6/gnPCa9Al SEqPJ995k12vldRv4SFBsqcerVc633U/wh1iyuY6aLgQlaxVif8YKPNeO9jUlVw4UkWk8jlLUqi/8 VbT9tbmYivz090dRb4D/vkOozMp/o2g5Rlre6RuWnz4O8n/AlB5eTWeyiSyANf0vQEpTrpbByKceR wdZCZC0W3lp2/oCckXFdPcEo04aIg9h9uy/2iSUc5HpwFehAXP636EnjkDaCuzXVGWAJ7gT/vDc3j sgHEJ5hbGjZIukqGCE1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1PyR-00000002g4Y-1RpC; Mon, 29 Apr 2024 12:19:11 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1Pxp-00000002fg1-3j4B; Mon, 29 Apr 2024 12:18:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=4DBgWrGRLrMji5A4t9bmWQ2nAQ4rfSDlHheE5nQXccM=; b=SvPL0Rvbaol/2Kpkt35XXUcGZL B3lepI3MFH9WFqdOC6f6hsMAjYMCm5pg3VHQVyDagrOmNMht1DdGVlN7KytaQc3kKqkAg3mbOO2GB KV5EfdxM8vdJ26YFDKgMAcyqqbe7x5eBFytWiRIvg4yFKmZD/tbSytv9S1trn3CEImiwIgbZDOXR2 HftFB/tgmwhaBTUpgwndTqndmA/b1LSxL28TXeXJ15nZ81XbFWTon/OyFGOBTaPDQovzH9pMUfKHf PzsVGHq2XzhafZksRuT198xkDiRCHJ4tIb4qWSxbRZFikGxTEjDjDiMsbLvK8Ysm7e9aGaNfeXES/ JfTaQD+A==; Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1Pxi-0000000GUbo-0yAo; Mon, 29 Apr 2024 12:18:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 5768CCE0B5B; Mon, 29 Apr 2024 12:18:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9733C4AF4D; Mon, 29 Apr 2024 12:18:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714393101; bh=Rvc7E+HMMA3ADjVUaU2tKv0yhJenjSe9igrLALIYU0s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sWk/NDmz3i5vr9Jv0qDjcUmsYiwDRQThiqhFVVZLqNw47kUEmH6HJt90/yg8TSIAn X8EJF0tdrP3OFzXUlKytIboRy/v+tKau6KDzl9uPY44J6Jea2kq6OssgeiedfE3heY M0LTdSW+l/cScv8edC3m/JOinkVMDAMeESbGhZLm9zyf4sgYNPf9y4P1iaMFoxCnND vmpP6mwHVkZTAqMzRQP8/xQtUuPRQkyg610OXx+F4hllN2VqM9JAkoH61yZltFlFPJ XqHK9UAaIQCm8F+CNnlQHgTMrBZV4LIp55MEtO6e0ArM3BMcNebQO1S7NqiSh5fsw2 ZYASF40QaHGlQ== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Alexandre Ghiti , Andrew Morton , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Donald Dutile , Eric Chanudet , Heiko Carstens , Helge Deller , Huacai Chen , Kent Overstreet , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Michael Ellerman , Mike Rapoport , Nadav Amit , Palmer Dabbelt , Peter Zijlstra , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Rick Edgecombe , Russell King , Sam Ravnborg , Song Liu , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Will Deacon , bpf@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH v7 09/16] riscv: extend execmem_params for generated code allocations Date: Mon, 29 Apr 2024 15:16:13 +0300 Message-ID: <20240429121620.1186447-10-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240429121620.1186447-1-rppt@kernel.org> References: <20240429121620.1186447-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240429_131827_301843_43E8D788 X-CRM114-Status: GOOD ( 13.53 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Mike Rapoport (IBM)" The memory allocations for kprobes and BPF on RISC-V are not placed in the modules area and these custom allocations are implemented with overrides of alloc_insn_page() and bpf_jit_alloc_exec(). Define MODULES_VADDR and MODULES_END as VMALLOC_START and VMALLOC_END for 32 bit and slightly reorder execmem_params initialization to support both 32 and 64 bit variants, define EXECMEM_KPROBES and EXECMEM_BPF ranges in riscv::execmem_params and drop overrides of alloc_insn_page() and bpf_jit_alloc_exec(). Signed-off-by: Mike Rapoport (IBM) Reviewed-by: Alexandre Ghiti --- arch/riscv/include/asm/pgtable.h | 3 +++ arch/riscv/kernel/module.c | 14 +++++++++++++- arch/riscv/kernel/probes/kprobes.c | 10 ---------- arch/riscv/net/bpf_jit_core.c | 13 ------------- 4 files changed, 16 insertions(+), 24 deletions(-) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 9f8ea0e33eb1..5f21814e438e 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -55,6 +55,9 @@ #define MODULES_LOWEST_VADDR (KERNEL_LINK_ADDR - SZ_2G) #define MODULES_VADDR (PFN_ALIGN((unsigned long)&_end) - SZ_2G) #define MODULES_END (PFN_ALIGN((unsigned long)&_start)) +#else +#define MODULES_VADDR VMALLOC_START +#define MODULES_END VMALLOC_END #endif /* diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c index 182904127ba0..0e6415f00fca 100644 --- a/arch/riscv/kernel/module.c +++ b/arch/riscv/kernel/module.c @@ -906,7 +906,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, return 0; } -#if defined(CONFIG_MMU) && defined(CONFIG_64BIT) +#ifdef CONFIG_MMU static struct execmem_info execmem_info __ro_after_init; struct execmem_info __init *execmem_arch_setup(void) @@ -919,6 +919,18 @@ struct execmem_info __init *execmem_arch_setup(void) .pgprot = PAGE_KERNEL, .alignment = 1, }, + [EXECMEM_KPROBES] = { + .start = VMALLOC_START, + .end = VMALLOC_END, + .pgprot = PAGE_KERNEL_READ_EXEC, + .alignment = 1, + }, + [EXECMEM_BPF] = { + .start = BPF_JIT_REGION_START, + .end = BPF_JIT_REGION_END, + .pgprot = PAGE_KERNEL, + .alignment = PAGE_SIZE, + }, }, }; diff --git a/arch/riscv/kernel/probes/kprobes.c b/arch/riscv/kernel/probes/kprobes.c index 2f08c14a933d..e64f2f3064eb 100644 --- a/arch/riscv/kernel/probes/kprobes.c +++ b/arch/riscv/kernel/probes/kprobes.c @@ -104,16 +104,6 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) return 0; } -#ifdef CONFIG_MMU -void *alloc_insn_page(void) -{ - return __vmalloc_node_range(PAGE_SIZE, 1, VMALLOC_START, VMALLOC_END, - GFP_KERNEL, PAGE_KERNEL_READ_EXEC, - VM_FLUSH_RESET_PERMS, NUMA_NO_NODE, - __builtin_return_address(0)); -} -#endif - /* install breakpoint in text */ void __kprobes arch_arm_kprobe(struct kprobe *p) { diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c index 6b3acac30c06..e238fdbd5dbc 100644 --- a/arch/riscv/net/bpf_jit_core.c +++ b/arch/riscv/net/bpf_jit_core.c @@ -219,19 +219,6 @@ u64 bpf_jit_alloc_exec_limit(void) return BPF_JIT_REGION_SIZE; } -void *bpf_jit_alloc_exec(unsigned long size) -{ - return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START, - BPF_JIT_REGION_END, GFP_KERNEL, - PAGE_KERNEL, 0, NUMA_NO_NODE, - __builtin_return_address(0)); -} - -void bpf_jit_free_exec(void *addr) -{ - return vfree(addr); -} - void *bpf_arch_text_copy(void *dst, void *src, size_t len) { int ret;