diff options
| author | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2025-03-27 19:05:03 -0400 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-04-07 14:46:56 +0200 |
| commit | 321550859f3bd64f547d0b4e9fbd97bd539ef47c (patch) | |
| tree | 0634dcfde8577ec760879c03c0104ba8f8cbfc75 | |
| parent | 0af2f6be1b4281385b618cb86ad946eded089ac8 (diff) | |
x86/microcode/AMD: Clean the cache if update did not load microcode
If microcode did not get loaded there is no reason to keep it in the cache.
Moreover, if loading failed it will not be possible to load an earlier version
of microcode since the failed revision will always be selected from the cache
on the next reload attempt.
Since the failed revisions is not easily available at this point just clean the
whole cache. It will be rebuilt later if needed.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20250327230503.1850368-3-boris.ostrovsky@oracle.com
| -rw-r--r-- | arch/x86/kernel/cpu/microcode/amd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c index b61028cf5c8a..57bd61f9c69b 100644 --- a/arch/x86/kernel/cpu/microcode/amd.c +++ b/arch/x86/kernel/cpu/microcode/amd.c @@ -1171,11 +1171,18 @@ static void microcode_fini_cpu_amd(int cpu) uci->mc = NULL; } +static void finalize_late_load_amd(int result) +{ + if (result) + cleanup(); +} + static struct microcode_ops microcode_amd_ops = { .request_microcode_fw = request_microcode_amd, .collect_cpu_info = collect_cpu_info_amd, .apply_microcode = apply_microcode_amd, .microcode_fini_cpu = microcode_fini_cpu_amd, + .finalize_late_load = finalize_late_load_amd, .nmi_safe = true, }; |