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 260619446 for ; Sun, 13 Aug 2023 21:41:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3409C433C9; Sun, 13 Aug 2023 21:41:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691962915; bh=fdcXeXRWJyJDF02tP8DTmtxOIjkYmWa8oiWYmqT+qFg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=174eIu2oqg4glqbjo14Ji/Z1ChTVrCJ8sJFcfR+VbQ1tYkSDhqZq9Vb6hEKrfr5Fa Ov4PX4yqMC8PZ4+sfoFCvK7NziBf+R85ELET2hf7T0dSbPPzCNUzqm1xHtWomKRlGY rX8LJ8RSJL0u4d/bSO/FQorWcydLsIJ5nmiKz9eA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Cristian Ciocaltea , "Borislav Petkov (AMD)" Subject: [PATCH 5.10 26/68] x86/cpu/amd: Enable Zenbleed fix for AMD Custom APU 0405 Date: Sun, 13 Aug 2023 23:19:27 +0200 Message-ID: <20230813211708.953515083@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230813211708.149630011@linuxfoundation.org> References: <20230813211708.149630011@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Cristian Ciocaltea commit 6dbef74aeb090d6bee7d64ef3fa82ae6fa53f271 upstream. Commit 522b1d69219d ("x86/cpu/amd: Add a Zenbleed fix") provided a fix for the Zen2 VZEROUPPER data corruption bug affecting a range of CPU models, but the AMD Custom APU 0405 found on SteamDeck was not listed, although it is clearly affected by the vulnerability. Add this CPU variant to the Zenbleed erratum list, in order to unconditionally enable the fallback fix until a proper microcode update is available. Fixes: 522b1d69219d ("x86/cpu/amd: Add a Zenbleed fix") Signed-off-by: Cristian Ciocaltea Signed-off-by: Borislav Petkov (AMD) Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230811203705.1699914-1-cristian.ciocaltea@collabora.com Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/amd.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -74,6 +74,7 @@ static const int amd_erratum_1054[] = static const int amd_zenbleed[] = AMD_LEGACY_ERRATUM(AMD_MODEL_RANGE(0x17, 0x30, 0x0, 0x4f, 0xf), AMD_MODEL_RANGE(0x17, 0x60, 0x0, 0x7f, 0xf), + AMD_MODEL_RANGE(0x17, 0x90, 0x0, 0x91, 0xf), AMD_MODEL_RANGE(0x17, 0xa0, 0x0, 0xaf, 0xf)); static const int amd_div0[] =