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 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 9B1C9CA600C for ; Thu, 8 Oct 2026 15:19:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type: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=FWzAyf83sJMqlpcdExg7TKJ622UXmHtaI+HggcOSlVw=; b=VbVOodfQ83p2z+BMebsMiHluyx XXGAVLJt2HKXfrjhXjZbEaCnFr/40q6S9Wbh8gk5HD0rMrMXXp3R5CKS2aM6tJRB88LMhdz6KQH/a zwchNIYUyGVcMg53WnWV8dfrLcyzb/fgkkl20ZvAxyivOtD4uy99wD3AqBPWPPB1zt9lzHbSopfj6 LjcMMx1RjGwp+OZChzAChdevINa8U3yVW/6/f0JU5HOdqOr8EX+l5rkD4pKcrzyX3iPKshTc6tgyo 5DIwNf7KkEgsRaV2GGQ/dWQbmdJgoawVbMGpCgktqwdZSuBttzoK+uMZaIe1+PRq1r8RDJnlDx4CL aiKbisww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xEptw-00000004b02-2WIa; Thu, 08 Oct 2026 15:19:20 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xEptv-00000004azw-2llF for linux-arm-kernel@lists.infradead.org; Thu, 08 Oct 2026 15:19:19 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 0CFC141A6E; Thu, 8 Oct 2026 15:19:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 630CB1F000FF; Thu, 8 Oct 2026 15:19:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791472758; bh=FWzAyf83sJMqlpcdExg7TKJ622UXmHtaI+HggcOSlVw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=VaSSgG/e1OFEOZeoSjyLzNDhrgxw/efV48ECagVYuF+B+AwcGwD/iOuhbngCe8xKs RbCzaFH3yZc1hT6N9KR9NOkQiGJR1VOfRLsGic46eV6Q5OPgrw0ZdqqBwXZHFX1SAU 5pL8i42Dv/GJ1sRFL4tHw50cXg3tLdwm+XwQVmUs8ITyUg0AI2UGOA++UEv0u0yQxG oGaIpg4cn+xAnLJnB6llSH+YRYICMZMdB7L+/Wsw7vP76zgC8MgnolanOyEjhM18nV flGH8PsR3kZYSYbLJhfq1BK8SIsDpcPpz4K+H3/S1zUx7enXkG00FEDnEHM0r7A9Ap JZ5oqB8EPzbiQ== From: Will Deacon To: Catalin Marinas , Karl Mehltretter Cc: mark.rutland@arm.com, kernel-team@android.com, Will Deacon , Qi Zheng , Arnd Bergmann , Andrey Konovalov , Alexander Potapenko , Dmitry Vyukov , kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: irq: exclude the softirq stack switch from KCOV Date: Thu, 8 Oct 2026 16:19:10 +0100 Message-ID: <179136595191.1063015.6426776896396499376.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260926191325.79047-1-kmehltretter@gmail.com> References: <20260926191325.79047-1-kmehltretter@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, 26 Sep 2026 21:13:25 +0200, Karl Mehltretter wrote: > On IRQ exit, __irq_exit_rcu() drops HARDIRQ_OFFSET before calling > invoke_softirq(). The arm64 do_softirq_own_stack() wrapper and its > ____do_softirq() trampoline run before __do_softirq() establishes > softirq context, so KCOV records their PCs in the interrupted task's > coverage buffer. They also run outside softirq accounting when > local_bh_enable() reaches do_softirq(). > > [...] Applied to arm64 (for-next/fixes), thanks! [1/1] arm64: irq: exclude the softirq stack switch from KCOV https://git.kernel.org/arm64/c/a9cd14bfb0c1 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev