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 92DA6C77B7A for ; Mon, 29 May 2023 08:46:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231588AbjE2IqY (ORCPT ); Mon, 29 May 2023 04:46:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229512AbjE2IqX (ORCPT ); Mon, 29 May 2023 04:46:23 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7B24AC2; Mon, 29 May 2023 01:46:22 -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 82F6C612FB; Mon, 29 May 2023 08:46:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D5181C4339B; Mon, 29 May 2023 08:46:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1685349980; bh=/V+SLKdvaHtCYTQwLxo45gaPakkF4D8ubWUXjKcsgvQ=; h=From:To:Cc:Subject:Date:From; b=LrQixWfnMt+yEPDB9h2XI2CwlaOtVIZySVDvok3CKpeqKtBzv6elnzL5duj96HIua mvZnNhHyQcL04IG5J2uPpotmvNzNG2+FO0wnTiPCE54cXMKT89v6cQgZ3DSJo1Skyq QV5+oqtMW88EAq6jQulWdWC75VvFm+bcrmg7FPPkNuXw+6iwt7cpS+cp+nLYYLzhv8 ESHZILORDrFboBFuQhYb2GlrC4DRV6miEsSFFpALvXNjkWWB361dchGm9qmOWEDgpA Ukfx+DRTC8qoC/ep9/s/FV3RhvxsrIyPIg3EJn+eSytM3Hbj6+NqyZG+TQ9co+F+Ud H6vfmhpteK2fg== From: guoren@kernel.org To: arnd@arndb.de, guoren@kernel.org, palmer@rivosinc.com, conor.dooley@microchip.com, heiko@sntech.de, jszhang@kernel.org, bjorn@kernel.org, greentime.hu@sifive.com, vincent.chen@sifive.com, andy.chiu@sifive.com, paul.walmsley@sifive.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH -next V12 0/3] riscv: Add independent irq/softirq stacks Date: Mon, 29 May 2023 04:45:57 -0400 Message-Id: <20230529084600.2878130-1-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 This patch series adds independent irq/softirq stacks to decrease the press of the thread stack. Also, add a thread STACK_SIZE config for users to adjust the proper size during compile time. This patch series belonged to the generic entry, which has been merged to for-next now. v12: - Rebase on palmer/for-next (20230529) - Move DECLARE_PER_CPU(ulong *, irq_stack_ptr) into irq_stack.h (Thx Conor) - Optimize commit msg v11: https://lore.kernel.org/linux-riscv/20230324071239.151677-1-guoren@kernel.org/ - Rebase on palmer/for-next (20230324) - Separate from generic entry patch series. v10: https://lore.kernel.org/linux-riscv/20221208025816.138712-1-guoren@kernel.org/ - Rebase on palmer/for-next branch (20221208) - Remove unrelated patches from the series (Suggested-by: Bjorn) - Fixup Typos. v9: https://lore.kernel.org/linux-riscv/20221130034059.826599-1-guoren@kernel.org/ - Fixup NR_syscalls check (by Ben Hutchings) - Add Tested-by: Jisheng Zhang v8: https://lore.kernel.org/linux-riscv/20221103075047.1634923-1-guoren@kernel.org/ - Rebase on palmer/for-next branch (20221102) - Add save/restore_from_x5_to_x31 .macro (JishengZhang) - Consolidate ret_from_kernel_thread into ret_from_fork (JishengZhang) - Optimize __noinstr_section comment (JiangshanLai) v7: https://lore.kernel.org/linux-riscv/20221015114702.3489989-1-guoren@kernel.org/ - Fixup regs_irqs_disabled with SR_PIE - Optimize stackleak_erase -> stackleak_erase_on_task_stack (Thx Mark Rutland) - Add BUG_ON(!irqs_disabled()) in trap handlers - Using regs_irqs_disabled in __do_page_fault - Remove unnecessary irq disable in ret_from_exception and add comment v6: https://lore.kernel.org/linux-riscv/20221002012451.2351127-1-guoren@kernel.org/ - 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/ Guo Ren (3): riscv: stack: Support HAVE_IRQ_EXIT_ON_IRQ_STACK riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK riscv: stack: Add config of thread stack size arch/riscv/Kconfig | 19 ++++++++ arch/riscv/include/asm/irq_stack.h | 32 +++++++++++++ arch/riscv/include/asm/thread_info.h | 14 ++---- arch/riscv/kernel/irq.c | 68 ++++++++++++++++++++++++++++ arch/riscv/kernel/traps.c | 35 +++++++++++++- 5 files changed, 155 insertions(+), 13 deletions(-) create mode 100644 arch/riscv/include/asm/irq_stack.h -- 2.36.1