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| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2023-06-13 17:11:41 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-10-16 16:31:32 +0300 |
| commit | 48da1ad8ba95ecd35d76355594c629f3ef2a954a (patch) | |
| tree | e0b10f3598e06ef362ead80dc1b15ffe7d957f6d /arch/x86/kernel/cpu/mce/internal.h | |
| parent | 495a91d0998367f4f079593f491bdfe8ef06838e (diff) | |
| download | linux-48da1ad8ba95ecd35d76355594c629f3ef2a954a.tar.xz | |
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/internal.h')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mce/internal.h b/arch/x86/kernel/cpu/mce/internal.h index bcf1b3c66c9c..a191554d98f2 100644 --- a/arch/x86/kernel/cpu/mce/internal.h +++ b/arch/x86/kernel/cpu/mce/internal.h @@ -210,6 +210,7 @@ extern bool filter_mce(struct mce *m); #ifdef CONFIG_X86_MCE_AMD extern bool amd_filter_mce(struct mce *m); +bool amd_mce_usable_address(struct mce *m); /* * If MCA_CONFIG[McaLsbInStatusSupported] is set, extract ErrAddr in bits @@ -237,6 +238,7 @@ static __always_inline void smca_extract_err_addr(struct mce *m) #else static inline bool amd_filter_mce(struct mce *m) { return false; } +static inline bool amd_mce_usable_address(struct mce *m) { return false; } static inline void smca_extract_err_addr(struct mce *m) { } #endif |