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| author | Borislav Petkov (AMD) <bp@alien8.de> | 2024-10-21 10:27:52 +0200 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-10-22 16:37:13 +0200 |
| commit | d1744a4c975b1acbe8b498356d28afbc46c88428 (patch) | |
| tree | 7cb2313863db9292b0a5841bc92ac65f79626d2f /rust/helpers/build_bug.c | |
| parent | 3267cb6d3a174ff83d6287dcd5b0047bbd912452 (diff) | |
| download | linux-d1744a4c975b1acbe8b498356d28afbc46c88428.tar.gz linux-d1744a4c975b1acbe8b498356d28afbc46c88428.tar.bz2 linux-d1744a4c975b1acbe8b498356d28afbc46c88428.zip | |
x86/microcode/AMD: Pay attention to the stepping dynamically
Commit in Fixes changed how a microcode patch is loaded on Zen and newer but
the patch matching needs to happen with different rigidity, depending on what
is being done:
1) When the patch is added to the patches cache, the stepping must be ignored
because the driver still supports different steppings per system
2) When the patch is matched for loading, then the stepping must be taken into
account because each CPU needs the patch matching its exact stepping
Take care of that by making the matching smarter.
Fixes: 94838d230a6c ("x86/microcode/AMD: Use the family,model,stepping encoded in the patch ID")
Reported-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/91194406-3fdf-4e38-9838-d334af538f74@kernel.dk
Diffstat (limited to 'rust/helpers/build_bug.c')
0 files changed, 0 insertions, 0 deletions