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 209E9350A39; Tue, 21 Oct 2025 19:56:02 +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=1761076562; cv=none; b=kupURlEJPk8BGU6ToncguYRCwg4kdQ83SO946ZIrmKXd5sldtDCVUv9KJSoXCxh8hnfq+db/hJFT4cBc2RYlAledyoNDjBsQM39+Qyl7edUkae6BTowWO1oT+6HVcYhuINOz1Q+mNJ6EoJH+2yHwO/WqxELAqX4iEHhMvHoqtus= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761076562; c=relaxed/simple; bh=ACvVGDooWxav1Cq2VpFKrENq5KylAoeWRyHiK+72g3U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sNnrr7Aw4LnBkGo+kuzbKxEy5kDcpblob/Wsa4mf5+LNRdnQY93HnAwM1ilbbWZTgdOzOWCQn838I3dITHMD7tTGCu9wUxnVEN5i8fxMebqz4hV0gb7PMFuLw1edekL9bTXYfjqvJJfjwLQ3dQsKFWbioaCOT/O8CTDYkQunOSg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GyG8/03u; 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="GyG8/03u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 73F2FC4CEF1; Tue, 21 Oct 2025 19:56:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761076562; bh=ACvVGDooWxav1Cq2VpFKrENq5KylAoeWRyHiK+72g3U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GyG8/03uYaa1fEZYl6cTXaVPJiFqXY57hJcQlvajsMqZYKSA/m1Je8gZlLeyVokxx vJcD5O7Sf7Nh4My992JSQmBSEOQZ/ZO1sSaB/XulUhlxdoKXaiNL/tQHqDL7w49iIJ JEbqFI01QtfoaHqHThCjP9iKCMehFqsZRm1LMiu4= 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 6.6 073/105] arm64: errata: Apply workarounds for Neoverse-V3AE Date: Tue, 21 Oct 2025 21:51:22 +0200 Message-ID: <20251021195023.392079198@linuxfoundation.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251021195021.492915002@linuxfoundation.org> References: <20251021195021.492915002@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-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 Signed-off-by: Greg Kroah-Hartman --- Documentation/arch/arm64/silicon-errata.rst | 2 ++ arch/arm64/Kconfig | 1 + arch/arm64/kernel/cpu_errata.c | 1 + 3 files changed, 4 insertions(+) --- a/Documentation/arch/arm64/silicon-errata.rst +++ b/Documentation/arch/arm64/silicon-errata.rst @@ -187,6 +187,8 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | ARM | Neoverse-V3 | #3312417 | ARM64_ERRATUM_3194386 | +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Neoverse-V3AE | #3312417 | ARM64_ERRATUM_3194386 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | MMU-500 | #841119,826419 | N/A | +----------------+-----------------+-----------------+-----------------------------+ | ARM | MMU-600 | #1076982,1209401| N/A | --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1094,6 +1094,7 @@ 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 @@ -471,6 +471,7 @@ 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