diff options
| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2023-06-13 09:11:41 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-10-16 15:31:32 +0200 |
| commit | 48da1ad8ba95ecd35d76355594c629f3ef2a954a (patch) | |
| tree | e0b10f3598e06ef362ead80dc1b15ffe7d957f6d /arch/x86/kernel/cpu/mce/core.c | |
| parent | 495a91d0998367f4f079593f491bdfe8ef06838e (diff) | |
x86/mce: Define amd_mce_usable_address()
Currently, all valid MCA_ADDR values are assumed to be usable on AMD
systems. However, this is not correct in most cases. Notifiers expecting
usable addresses may then operate on inappropriate values.
Define a helper function to do AMD-specific checks for a usable memory
address. List out all known cases.
[ bp: Tone down the capitalized words. ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230613141142.36801-3-yazen.ghannam@amd.com
Diffstat (limited to 'arch/x86/kernel/cpu/mce/core.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 6f35f724cc14..06c21f571d5a 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -464,6 +464,9 @@ int mce_usable_address(struct mce *m) if (!(m->status & MCI_STATUS_ADDRV)) return 0; + if (m->cpuvendor == X86_VENDOR_AMD) + return amd_mce_usable_address(m); + /* Checks after this one are Intel/Zhaoxin-specific: */ if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL && boot_cpu_data.x86_vendor != X86_VENDOR_ZHAOXIN) |