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authorCristian Ciocaltea <cristian.ciocaltea@collabora.com>2023-08-11 23:37:05 +0300
committerBorislav Petkov (AMD) <bp@alien8.de>2023-08-11 22:52:29 +0200
commit6dbef74aeb090d6bee7d64ef3fa82ae6fa53f271 (patch)
treea4c42068986576fb3edfc703fcc1998491259c23 /arch
parent1b8b1aa90c9c0e825b181b98b8d9e249dc395470 (diff)
x86/cpu/amd: Enable Zenbleed fix for AMD Custom APU 0405
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 <cristian.ciocaltea@collabora.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230811203705.1699914-1-cristian.ciocaltea@collabora.com
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/amd.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 26ad7ca423e7..c15b4f02b4cf 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -73,6 +73,7 @@ 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 bool cpu_has_amd_erratum(struct cpuinfo_x86 *cpu, const int *erratum)