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| author | JP Kobryn <[email protected]> | 2025-06-27 17:49:35 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2025-06-28 10:45:48 +0000 |
| commit | 30ad231a5029bfa16e46ce868497b1a5cdd3c24d (patch) | |
| tree | 1a5a9c2d1cefc2123ed9ae7c4eff85081580ba1e /lib/crypto/utils.c | |
| parent | x86/mce/amd: Fix threshold limit reset (diff) | |
| download | kernel-30ad231a5029bfa16e46ce868497b1a5cdd3c24d.tar.gz kernel-30ad231a5029bfa16e46ce868497b1a5cdd3c24d.zip | |
x86/mce: Make sure CMCI banks are cleared during shutdown on Intel
CMCI banks are not cleared during shutdown on Intel CPUs. As a side effect,
when a kexec is performed, CPUs coming back online are unable to
rediscover/claim these occupied banks which breaks MCE reporting.
Clear the CPU ownership during shutdown via cmci_clear() so the banks can
be reclaimed and MCE reporting will become functional once more.
[ bp: Massage commit message. ]
Reported-by: Aijay Adams <[email protected]>
Signed-off-by: JP Kobryn <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Tony Luck <[email protected]>
Reviewed-by: Qiuxu Zhuo <[email protected]>
Cc: <[email protected]>
Link: https://lore.kernel.org/[email protected]
Diffstat (limited to 'lib/crypto/utils.c')
0 files changed, 0 insertions, 0 deletions