From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 053FFC433F5 for ; Sun, 2 Oct 2022 01:25:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229436AbiJBBZe (ORCPT ); Sat, 1 Oct 2022 21:25:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229552AbiJBBZc (ORCPT ); Sat, 1 Oct 2022 21:25:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E6693FD74; Sat, 1 Oct 2022 18:25:27 -0700 (PDT) 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 0961660C3A; Sun, 2 Oct 2022 01:25:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4ED39C433D7; Sun, 2 Oct 2022 01:25:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664673926; bh=Z6znzTi+KnB8Q307455dOXkYgby6LTL4boASwYTGr+c=; h=From:To:Cc:Subject:Date:From; b=Y27Sn647PzlhzedsGTPSmG03gKB3qdJ4jmVSZBveFJQ/gvmFwfoMXS+h4+0mWq1/6 vTh4Wd1uBY3QevMd9LAkYOHBH7901hkL+lTsZVCMXjpSJLrnloL0Rg78Jx5c32siwf TTtU45/wYxRAeoO3g5UVEattYohVIhHNvVjAZzzPFbhZt2pZXhia1/kyIvM1nPaKug puvP3fRZBo6Zjmczhvr0vrEqdPkW4Hd4+qaTuozET6ePGrIa5SBqctZVf+1+Iw2Ouj omNvgqxADKhOzNG6KoLj5AkE5zbOrmWpfs9nYryF/LgC/Z5Ay9v6ciL1R+LyzGdpAX Cm5atNaetXjSw== 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, chenzhongjin@huawei.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH V6 00/11] riscv: Add GENERIC_ENTRY support and related features Date: Sat, 1 Oct 2022 21:24:40 -0400 Message-Id: <20221002012451.2351127-1-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.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. You can directly try it with: [1] https://github.com/guoren83/linux/tree/generic_entry_v6 v6: - Use THEAD_SIZE_ORDER for thread size adjustment in kconfig (Thx Arnd) - Move call_on_stack to inline style (Thx Peter Zijlstra) - Fixup fp chain broken (Thx Chen Zhongjin) - Remove common entry modification, and fixup page_fault entry (Thx Peter Zijlstra) - Treat some traps as nmi entry (Thx Peter Zijlstra) v5: https://lore.kernel.org/linux-riscv/20220918155246.1203293-1-guoren@kernel.org/ - 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 Zijlstra) - 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 Zijlstra) 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 (8): 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 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 Jisheng Zhang (1): riscv: remove extra level wrappers of trace_hardirqs_{on,off} Lai Jiangshan (1): compiler_types.h: Add __noinstr_section() for noinstr arch/riscv/Kconfig | 21 +++ arch/riscv/include/asm/csr.h | 1 - arch/riscv/include/asm/entry-common.h | 8 + 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 | 3 +- arch/riscv/kernel/elf_kexec.c | 2 +- arch/riscv/kernel/entry.S | 230 +++----------------------- arch/riscv/kernel/irq.c | 110 ++++++++++++ arch/riscv/kernel/ptrace.c | 44 ----- arch/riscv/kernel/signal.c | 21 +-- arch/riscv/kernel/sys_riscv.c | 27 +++ arch/riscv/kernel/trace_irq.c | 27 --- arch/riscv/kernel/trace_irq.h | 11 -- arch/riscv/kernel/traps.c | 70 ++++++-- arch/riscv/mm/fault.c | 14 +- drivers/firmware/efi/libstub/Makefile | 2 +- include/linux/compiler_types.h | 8 +- 21 files changed, 321 insertions(+), 354 deletions(-) create mode 100644 arch/riscv/include/asm/entry-common.h create mode 100644 arch/riscv/include/asm/vmap_stack.h delete mode 100644 arch/riscv/kernel/trace_irq.c delete mode 100644 arch/riscv/kernel/trace_irq.h -- 2.36.1