From patchwork Sun Sep 18 15:52:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12979517 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 44C27ECAAD8 for ; Sun, 18 Sep 2022 15:53:13 +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: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:In-Reply-To:References: List-Owner; bh=SZ8roRqJpWSIfXSPxYK8Qty+mrD4IJ84g4KslJA3ztA=; b=YpG+ob6voZDH3e kwU0UeFBfSURWRzuZ/7UK6YVAnd4/pTunydSm5djJiRCTBjSPJfuderlzpCNyMdCsKaRnaxHNUg14 YMQm0jepRzCDjpWhmytqf9xDXVwSFy2fHmcivi8fMIHe825WrsaTOwusAbNarVpfKS8Qtw67MfGFs PPSqXoeo6KH+jEeiugiytf+epiIapHlIqZyzud9d0Apwjsx4KXDoUSkM17C0Jj4gCRJ3vyffwYOmh /zsdfU1pRuWy4+QKU9LJwQYAxf/EFc/KcqWdibX8lQS7KShzQ8LutGciP0k+zlAkhogfZFGIsXFqc +0fUAmEN+tDs2VUnsS8w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oZwbO-000Fh8-QV; Sun, 18 Sep 2022 15:53:02 +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 1oZwbM-000FfH-Cq for linux-riscv@lists.infradead.org; Sun, 18 Sep 2022 15:53:01 +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 87E086006F; Sun, 18 Sep 2022 15:52:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F587C433D7; Sun, 18 Sep 2022 15:52:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1663516378; bh=FoCd95aHbihKduTU0YZ17rKso3DNVUhMPWgAshfcpV0=; h=From:To:Cc:Subject:Date:From; b=PQ/irLDZ2QC9umKChFtuTZsogDUENiniMrIkQ7vVgrN0T896ylPWVLxmO7t7VL0Yq Of5AGSjUYgKLJFiPk3+wEa++qDpSq0eVwBra2NxJ/ihdykqfnbgqHHkdIWBy0+5vls HAdCL9my6uRCCNJA/Lf8i77ent9ZZ9hJmH3p+/atMg3vq19fmCNie736WyWhAsStro 7ztyMA4M58AxpPPhPA3MuKUNXf4rJ3xkBzmM0K4SYfscFUpyWHehSuGq5A6CSfBZMw umEv6tF2U4/9FzfyxavD4jBClJcmYR4X5MDlVGy6YFy5lmh8kjtpYNMa88xVLPefZc QCp/qQFEly2+g== From: guoren@kernel.org To: arnd@arndb.de, guoren@kernel.org, palmer@rivosinc.com, tglx@linutronix.de, peterz@infradead.org, luto@kernel.org, conor.dooley@microchip.com, heiko@sntech.de, jszhang@kernel.org, lazyparser@gmail.com, falcon@tinylab.org, chenhuacai@kernel.org, apatel@ventanamicro.com, atishp@atishpatra.org, palmer@dabbelt.com, paul.walmsley@sifive.com, mark.rutland@arm.com, zouyipeng@huawei.com, bigeasy@linutronix.de, David.Laight@aculab.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH V5 00/11] riscv: Add GENERIC_ENTRY support and related features Date: Sun, 18 Sep 2022 11:52:35 -0400 Message-Id: <20220918155246.1203293-1-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220918_085300_538285_C0E6A870 X-CRM114-Status: GOOD ( 13.41 ) 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 patches convert riscv to use the generic entry infrastructure from kernel/entry/*. Additionally, add independent irq stacks (IRQ_STACKS) for percpu to prevent kernel stack overflows. Add generic_entry based STACKLEAK support. [1] https://github.com/guoren83/linux/tree/generic_entry_v5 v5: - Add riscv own stackleak patch instead of generic entry modification (by Mark Rutland) - Add EXPERT dependency for THREAD_SIZE (by Arnd) - Add EXPERT dependency for IRQ_STACK (by Sebastian, David Laight) - Corrected __trap_section (by Peter Ziji) - Add Tested-by (Yipeng Zou) - Use CONFIG_SOFTIRQ_ON_OWN_STACK replace "#ifndef CONFIG_PREEMPT_RT" - Fixup systrace_enter compile error - Fixup exit_to_user_mode_prepare preempt_disable warning V4: https://lore.kernel.org/linux-riscv/20220908022506.1275799-1-guoren@kernel.org/ - Fixup entry.S with "la" bug (by Conor.Dooley) - Fixup missing noinstr bug (by Peter Ziji) V3: https://lore.kernel.org/linux-riscv/20220906035423.634617-1-guoren@kernel.org/ - Fixup CONFIG_COMPAT=n compile error - Add THREAD_SIZE_ORDER config - Optimize elf_kexec.c warning fixup - Add static to irq_stack_ptr definition V2: https://lore.kernel.org/linux-riscv/20220904072637.8619-1-guoren@kernel.org/ - Fixup compile error by include "riscv: ptrace: Remove duplicate operation" - Fixup compile warning Reported-by: kernel test robot - Add test repo link in cover letter V1: https://lore.kernel.org/linux-riscv/20220903163808.1954131-1-guoren@kernel.org/ Dao Lu (1): riscv: Add support for STACKLEAK gcc plugin Guo Ren (9): riscv: elf_kexec: Fixup compile warning riscv: compat_syscall_table: Fixup compile warning riscv: ptrace: Remove duplicate operation riscv: traps: Add noinstr to prevent instrumentation inserted entry: Prevent DEBUG_PREEMPT warning riscv: convert to generic entry riscv: Support HAVE_IRQ_EXIT_ON_IRQ_STACK riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK riscv: Add config of thread stack size Lai Jiangshan (1): compiler_types.h: Add __noinstr_section() for noinstr arch/riscv/Kconfig | 29 +++ arch/riscv/include/asm/csr.h | 1 - arch/riscv/include/asm/entry-common.h | 8 + arch/riscv/include/asm/irq.h | 3 + arch/riscv/include/asm/ptrace.h | 10 +- arch/riscv/include/asm/stacktrace.h | 5 + arch/riscv/include/asm/syscall.h | 6 + arch/riscv/include/asm/thread_info.h | 27 +-- arch/riscv/include/asm/vmap_stack.h | 28 +++ arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/elf_kexec.c | 2 +- arch/riscv/kernel/entry.S | 257 ++++++-------------------- arch/riscv/kernel/irq.c | 75 ++++++++ arch/riscv/kernel/ptrace.c | 44 ----- arch/riscv/kernel/signal.c | 21 +-- arch/riscv/kernel/sys_riscv.c | 27 +++ arch/riscv/kernel/traps.c | 15 +- arch/riscv/mm/fault.c | 12 +- drivers/firmware/efi/libstub/Makefile | 2 +- include/linux/compiler_types.h | 8 +- kernel/entry/common.c | 2 + 21 files changed, 282 insertions(+), 301 deletions(-) create mode 100644 arch/riscv/include/asm/entry-common.h create mode 100644 arch/riscv/include/asm/vmap_stack.h