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 73624322A27; Mon, 27 Oct 2025 18:47:54 +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=1761590874; cv=none; b=prA2rLkuQ4vMjqvObpKHnw5QEn9Urj5pvnLdxnRcf6K+oKPnQGRMAEHdGKnAuE9HTJX1HwKUa3G/BCuVNXiTZ/ibv+ff7Wx3b1equ/4tcgsTB6gjk5CAwjfJ37i27foUdowA7oRVZNxusVqZVbpeKpM48mjnD6/x+wrqEbxCCbY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761590874; c=relaxed/simple; bh=jqjl4X2RymuhN2PUKeCbJUEhMkwRhmyxJ/fKTjYBTFI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sM7cHi6s31KHl/NKmaTb45IzX3sAEIkw/oAl0EqEecKxk6+fMMrebnugyVtNqjoMBKt4XsbeyEBKNRokHH6lk3+flnrxnUB1OnNjOWe1glavsTbDpxyDYfNOAs4zBU/9ph6lZWUMLYmplJCkEfoA/GfLkFZafgh9o72mLVRCDxM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=gUOcq4Z5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="gUOcq4Z5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 01A68C4CEF1; Mon, 27 Oct 2025 18:47:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761590874; bh=jqjl4X2RymuhN2PUKeCbJUEhMkwRhmyxJ/fKTjYBTFI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gUOcq4Z52mmFaiVRjCPzbipmjjsPU9g3ji9YpsEOT0TAAVnrvrQszdJ7BRMHfc0HO uNfNprallhm4YefQFf5IF1HZugvca+bgjAiFFemxSAdE8btzHpWGrPKpOzv4CVP2zF ik463rKt/ra7zefWN/5kS6ABXngRmJHyBTGDaxWo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mark Rutland , James Morse , Will Deacon , Catalin Marinas , Ryan Roberts Subject: [PATCH 5.4 208/224] arm64: errata: Apply workarounds for Neoverse-V3AE Date: Mon, 27 Oct 2025 19:35:54 +0100 Message-ID: <20251027183514.335422544@linuxfoundation.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251027183508.963233542@linuxfoundation.org> References: <20251027183508.963233542@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mark Rutland commit 0c33aa1804d101c11ba1992504f17a42233f0e11 upstream. Neoverse-V3AE is also affected by erratum #3312417, as described in its Software Developer Errata Notice (SDEN) document: Neoverse V3AE (MP172) SDEN v9.0, erratum 3312417 https://developer.arm.com/documentation/SDEN-2615521/9-0/ Enable the workaround for Neoverse-V3AE, and document this. Signed-off-by: Mark Rutland Cc: James Morse Cc: Will Deacon Cc: Catalin Marinas Signed-off-by: Ryan Roberts Signed-off-by: Will Deacon [ Ryan: Trivial backport ] Signed-off-by: Ryan Roberts Signed-off-by: Greg Kroah-Hartman --- Documentation/arm64/silicon-errata.rst | 2 ++ arch/arm64/Kconfig | 1 + arch/arm64/kernel/cpu_errata.c | 1 + 3 files changed, 4 insertions(+) --- a/Documentation/arm64/silicon-errata.rst +++ b/Documentation/arm64/silicon-errata.rst @@ -134,6 +134,8 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | ARM | Neoverse-V3 | #3312417 | ARM64_ERRATUM_3194386 | +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Neoverse-V3AE | #3312417 | ARM64_ERRATUM_3194386 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | MMU-500 | #841119,826419 | N/A | +----------------+-----------------+-----------------+-----------------------------+ +----------------+-----------------+-----------------+-----------------------------+ --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -617,6 +617,7 @@ config ARM64_ERRATUM_3194386 * ARM Neoverse-V1 erratum 3324341 * ARM Neoverse V2 erratum 3324336 * ARM Neoverse-V3 erratum 3312417 + * ARM Neoverse-V3AE erratum 3312417 On affected cores "MSR SSBS, #0" instructions may not affect subsequent speculative instructions, which may permit unexepected --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -863,6 +863,7 @@ static const struct midr_range erratum_s MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V3), + MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V3AE), {} }; #endif