From patchwork Wed Jun 14 01:30:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 13279412 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 5EA3EEB64D8 for ; Wed, 14 Jun 2023 01:30:39 +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=cPsSky3VKzrBCf53aEuweasn+Hc/MwIKp4jctFP1Tfs=; b=IL8nEirSQiCK43 eVvkll7LIFGxi9JcTbHsoNGZag0xnbrvf01iT9JuZ0wpsWUaPp0l136EPN7W4HNRc72YDA9+3syFt dkQqPC545ntTsTrkI2PuYc2hRaXNCu4oHpufV53GC9ZRwoiEoKn6LwjAqrGZki9hRo5/vRMPDlgTE zewFXu6XZPUivle5KVYT4r6lOi5pk1TIWay/dTIx2FJsdtDNO/WwpoZp3Gbo7Sxeu4QXv2IfZlQiv zo3435xQUQP8u/jn5Wztm7pVUQYRW+Di2AVpMV01NHQ6YGOVb3PkzOAYTOyotQ1CquR30zOGATAia x4NkdrcsvOGgHWvO//wg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q9FLG-009d6Q-2z; Wed, 14 Jun 2023 01:30:34 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q9FL9-009d4E-0Q for linux-riscv@lists.infradead.org; Wed, 14 Jun 2023 01:30:32 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 661AE62FA9; Wed, 14 Jun 2023 01:30:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 590BBC433CA; Wed, 14 Jun 2023 01:30:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686706224; bh=1A5KVVxyg74MwDhILMrc7YVC1sXoGN2aGyDkI3U1yBE=; h=From:To:Cc:Subject:Date:From; b=K/Of8m8qr2TUrQVMpfPXNwNqCv2zlN6kheHcyvdAPkU9GAWJoWGsKTT/J4RVKEvxF ptp1rv1wNXqK4RJrIHEMcFkF+v1hDcawvC4mOdZ0AA5f40I95W+xuiMKHxwk4AD94o dyV6B9OpoZCzyXkD+IcvT/S3eebd9j/ZLYOWHk8jtcng42ove4BeNayzJPnVjU/Bqy aEpFCBvr9RQUxLt58W2AbEVVKcCuYYpIE8flY33TcJbNT5k4l32HLk9E0deTMxq5+j yxQ6vZ0Kb/hFSTqa+NABim8qfb98YFzUZ1Z9VZ4GINXcWl/+rcBXIpNUjVa8MaedN4 qh6476CsNMn1g== 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, cleger@rivosinc.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH -next V13 0/3] riscv: Add independent irq/softirq stacks support Date: Tue, 13 Jun 2023 21:30:15 -0400 Message-Id: <20230614013018.2168426-1-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-20230613_183027_254600_8CD5C0E2 X-CRM114-Status: GOOD ( 10.98 ) 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 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. v13: - Rebase on riscv/for-next commit d5e45e810e0e ("Merge patch series "riscv: Add vector ISA support"") - Rmove unnecessary BUILD_BUG_ON(). (Thx Clément) v12: https://lore.kernel.org/linux-riscv/20230529084600.2878130-1-guoren@kernel.org/ - 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 | 30 ++++++++++++ arch/riscv/include/asm/thread_info.h | 14 ++---- arch/riscv/kernel/irq.c | 68 ++++++++++++++++++++++++++++ arch/riscv/kernel/traps.c | 35 +++++++++++++- 5 files changed, 153 insertions(+), 13 deletions(-) create mode 100644 arch/riscv/include/asm/irq_stack.h