From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F179F1F3D49 for ; Fri, 6 Dec 2024 17:11:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733505088; cv=none; b=lym38pY5u0QWXhSgGgv9pTAgriIoBotIn23evTqYl9GnmbOlIPxZl+a4mo5DTR5JehU+LSAPOfNGPOqjThV21bYIE3cesk6b0XARo0itNnfZa1JPVDPJUwI/i381hLmDFi89rjaEP/xOLlSsZFA7MPtcWI45p7eaIBlkGW9Q7HE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733505088; c=relaxed/simple; bh=8CMmPn0QMxDUxGj5fxFn6XEomuGHDb3VHP2rQiEWiIg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SzYNLwwWv+PPw+p7jGFUIKUbP8mSyd/56Gkzim7MutazXZ9Ipp9pIFJRktCb3VR93L3RMAm6c9M984gu1wa5ZGLRo8IhGGRh9HS147nNyfchlUeLM5yFfwIekpaQbBXpCtnNkbZgWjANuoEPNPiYc2VZm8CQg2linBwLUHNq2MI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rK8urNtF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rK8urNtF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E20C8C4CED1; Fri, 6 Dec 2024 17:11:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733505086; bh=8CMmPn0QMxDUxGj5fxFn6XEomuGHDb3VHP2rQiEWiIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rK8urNtF6M6FYYMSfM2kxPtUqE4UCieoRP5GgKogZ8bwNLdCmzpuevPasjs2SoG/D jd6jPhIbSbRUWSyktMMZ+d3tpjEogln9SeQuafDHna2QkuJW7EdUxxcKqlQOSHDpJS w5Td743I5kGFKLkGjmbcItg8achnGTdsE5JMYCmCM4O36k6OS4QDR5JCcEfADQe187 /1nB7yPtqiNJqgOS+qpiFIMg51su5QhBkLgb5t89zr/Ljmx2g2KR5jo18QFv5fi8oo 0qpVloAUGXVioLgQpwPQWAJRBG/z4wAeZ+ivKf1sqZY+IrQpO+7mfXW3EJfRqm33mY gIWvhDBLouXAg== From: Sasha Levin To: stable@vger.kernel.org Cc: Mark Brown , Sasha Levin Subject: Re: [PATCH 6.1] arm64/sve: Discard stale CPU state when handling SVE traps Date: Fri, 6 Dec 2024 12:11:24 -0500 Message-ID: <20241206095940-7f452f166e2e0511@stable.kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241206132206.143543-1-broonie@kernel.org> References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit [ Sasha's backport helper bot ] Hi, Found matching upstream commit: 751ecf6afd6568adc98f2a6052315552c0483d18 Status in newer kernel trees: 6.12.y | Present (exact SHA1) 6.6.y | Present (different SHA1: 51d11ea0250d) 6.1.y | Not found Note: The patch differs from the upstream commit: --- 1: 751ecf6afd656 ! 1: b773f808e9357 arm64/sve: Discard stale CPU state when handling SVE traps @@ Commit message Reviewed-by: Mark Rutland Link: https://lore.kernel.org/r/20241030-arm64-fpsimd-foreign-flush-v1-1-bd7bd66905a2@kernel.org Signed-off-by: Will Deacon + [Backported to 6.1 -- broonie] + (cherry picked from commit 751ecf6afd6568adc98f2a6052315552c0483d18) ## arch/arm64/kernel/fpsimd.c ## @@ arch/arm64/kernel/fpsimd.c: static void sve_init_regs(void) + fpsimd_bind_task_to_cpu(); } else { fpsimd_to_sve(current); - current->thread.fp_type = FP_STATE_SVE; + fpsimd_flush_task_state(current); } } --- Results of testing on various branches: | Branch | Patch Apply | Build Test | |---------------------------|-------------|------------| | stable/linux-6.1.y | Success | Success |