From patchwork Sun Jul 16 00:15:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 13314745 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 9AF53C001B0 for ; Sun, 16 Jul 2023 00:15:47 +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=3Y3j5QRXCCmzHKQEDc/6RxJOZAW71u5oG4ICpk5qO64=; b=xsVPdpCz1hdrb6 V2JHTtgo3b4oxEJBib8GPZOYpPkgJQSbhuBcKHAmMbMFbKlaUU9UYWrAAluuhbVHpdja0pxwXO47+ aQB3rHckCfTRXpU7JnTCqK+qjKFd70jdATkb2zGquX+AA3qCD0wIInV38IUFCObzeYpAD1NPypfzX 4+pEPq5O/7bC+ZHFCLcUGrRkRc4TfzkQuM+Td4PcRYa8f5tybyckZwtwgRaSqEZCbtjF5a+uxjzPw +jBXqxT6UwQuOaFTppMhoEqcoeASC6dsMCPQBW7aaMzo8PndKxqx9VJn+8c0ykhKU0R3J/vIkQZ4B Pvxdn84yLj+En6s0Z5nA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qKpQ3-009j5D-2E; Sun, 16 Jul 2023 00:15:23 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qKpQ0-009j4H-2b for linux-riscv@lists.infradead.org; Sun, 16 Jul 2023 00:15:22 +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 B014C60C55; Sun, 16 Jul 2023 00:15:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB014C433CB; Sun, 16 Jul 2023 00:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689466519; bh=E/jFfO+retDoLdPOyJc5wmE7Q3RkrIB4bLkvlh5cMyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cXkVAhKOvak//vq4NvrYl/XxauhW+hxgcoEqlbfIhk5u6YsST3l0Y8/WwnaiRBB+N zoUDoiPMG1GzOnlMYnAdvJWdXPUCS9ewLprgn1W6oDd+rd9fFeZVgBkRaJioYAx7Gu aRNjFMp4gmIM3r7wtXqJbKfMMUFuvq9Kn8c7MaZmEbVgRZTzKfT3UMQemGnUKIPQ35 oiGi/2zjVxCy2JI8oSa90MiJENKU83yZAPbcZSWUiKdhTRnJzt+WM6Kv83e73bmMB0 s1UjLKbcd1E+cb4Qt502xDb7nhaYkeGEpdCnY5BOnLU3VGklJpW9TPMFUBa3ZRxHwK Su5ONNJ3QNw3w== From: guoren@kernel.org To: guoren@kernel.org, palmer@rivosinc.com, paul.walmsley@sifive.com, falcon@tinylab.org, bjorn@kernel.org, conor.dooley@microchip.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, stable@vger.kernel.org, Guo Ren Subject: [PATCH V2 2/2] riscv: stack: Fixup independent softirq stack for CONFIG_FRAME_POINTER=n Date: Sat, 15 Jul 2023 20:15:06 -0400 Message-Id: <20230716001506.3506041-3-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20230716001506.3506041-1-guoren@kernel.org> References: <20230716001506.3506041-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230715_171520_903954_AE79C58A X-CRM114-Status: UNSURE ( 8.93 ) X-CRM114-Notice: Please train this message. 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 independent softirq stack uses s0 to save & restore sp, but s0 would be corrupted when CONFIG_FRAME_POINTER=n. So add s0 in the clobber list to fix the problem. Fixes: dd69d07a5a6c ("riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK") Cc: stable@vger.kernel.org Reported-by: Zhangjin Wu Signed-off-by: Guo Ren Signed-off-by: Guo Ren --- arch/riscv/kernel/irq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c index d0577cc6a081..a8efa053c4a5 100644 --- a/arch/riscv/kernel/irq.c +++ b/arch/riscv/kernel/irq.c @@ -84,6 +84,9 @@ void do_softirq_own_stack(void) : [sp] "r" (sp) : "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3", "t4", "t5", "t6", +#ifndef CONFIG_FRAME_POINTER + "s0", +#endif "memory"); } else #endif