From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793017448; b=GRoh9n0eVin7sjCENbt10gSaf3+39trQWaIgvWQfeCAYiGy7UYICMQ2zX3WJv7v8sCkv oNrnP8q+Fk5pPlC/pRdJU/Kx66Gez/Hmm487zyba8h18Z/mSwQHz9VXAuWooZNi4EY9/y Ah9r7d2G2oyuGyFbWwpRyP667KXUTNoXUEQWF9pe0EL+VIF9/feUcy8KpP9C5AIPXH9AK cpd3qfzUMIzdI7Y5XMvGwvxMlwHfS+JFl1UQD5dIdFOAGg3Kru6CZpC4pzP1xboKylhX8 AOUAJKEJjy2x52ZphNaBZeZGh9e2CDOugy6H5jYuVZJP2JQ/QE+Az4SxKTs5UhjVdJA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793017448; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=0zDJHSIUPMFXhVT6PgUbRLXsLSmvvh65IHXIJ0iQcXM=; b=4N6X5tn7icCiXv0GRDPdTcGH+74/l5WLVRoG+zVs9flTGnuaNz43cUyyiIGdp032ONim BTFap47flinh8+Y4MsoC5g1Z9suCaPLybeg7H+zmPZVIpegIb+w53IAIzc8+QZTt4f5Ur r73vMsg6QohEMbnsHKPsAiY+bVXxag4gdbwHjiLw89V57HkYaZq1US5R27uu9Vs/0wL0Q PnbnVDaFtXt76IGlvdB+bnp+I9OY41f9dJDXk74qyxMW9weA4o6dQjZeLEI8XjU0rGKnL B0x3TUysbhlj78DfA16MNwZ0zLvgvad99N+JYg3EBXMJowTllvpbvFxPs4LrPlQfhnA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=G4bdLiFT; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 119A7606A31A for ; Mon, 26 Oct 2026 12:24:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=G4bdLiFT Received: by smtp.kernel.org (Postfix) with ESMTPSA id 661BB1F01825; Mon, 26 Oct 2026 12:24:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793017447; bh=0zDJHSIUPMFXhVT6PgUbRLXsLSmvvh65IHXIJ0iQcXM=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=G4bdLiFT8yy3/9SbLifjOtYGgCUEJqECJXBCPuRFhjvsaoUl5ejaDvUdIe7e62XJC DL7pBSlyPjP4y3DZ6m9m/glNOY4GYba7p9XR0+SH67ZJiPIjiDVQN43v3O2nGOcNDr fpRtB5WKz6w8BuTjObmhhOqg24E3grkYH6daV5ewr0KaiD2Dgzy3lrOrA7pBtX5WDi y5hk0bAmJ0WBP6qrNH+oObMfX7ie8abi3SyfES1dZq9Dg5LZzq8YtpAEcwxOM1Hg1W P5oUG1fRyWUhuofkchyq0mLnVwZ92r4nllA8aKWnWUdl7ESCHybzemibObc8EOHDwf hEaW2Nz/h9xnA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH 2/4] s390/ftrace: Serialize text patching with text_mutex Reply-To: sashiko-reviews@lists.linux.dev To: "Heiko Carstens" Cc: linux-s390@vger.kernel.org, "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261026120329.1792436-3-hca@linux.ibm.com> References: <20261026120329.1792436-1-hca@linux.ibm.com> <20261026120329.1792436-3-hca@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 26 Oct 2026 12:24:06 +0000 X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Add ftrace_arch_code_modify_prepare() and extend > ftrace_arch_code_modify_post_process() to acquire and release text_mutex > around the ftrace code modification pass. This way s390 uses text_mutex > like e.g. x86 and riscv. >=20 > This is a prereq for removing the spinlock in __s390_kernel_write(). >=20 > Signed-off-by: Heiko Carstens Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261026120329.1792= 436-1-hca@linux.ibm.com?part=3D2