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| author |   Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com> | 2021-11-04 16:58:42 -0500 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-12-08 12:01:01 +0100 |
| commit | 1e56279a49168f24b2b58e843ae92976f90a98a6 (patch) | |
| tree | 09ea57e19726cde0bdfad3d8309902cb72c6a932 /arch/x86/kernel | |
| parent | x86/mce/inject: Check if a bank is populated before injecting (diff) | |
| download | linux-dev-1e56279a49168f24b2b58e843ae92976f90a98a6.tar.xz linux-dev-1e56279a49168f24b2b58e843ae92976f90a98a6.zip | |
x86/mce/inject: Set the valid bit in MCA_STATUS before error injection
MCA handlers check the valid bit in each status register
(MCA_STATUS[Val]) and continue processing the error only if the valid
bit is set.
Set the valid bit unconditionally in the corresponding MCA_STATUS
register and correct any Val=0 injections made by the user as such
errors will get ignored and such injections will be largely pointless.
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20211104215846.254012-3-Smita.KoralahalliChannabasappa@amd.com
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/inject.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c index 725e8e4331a9..6eac840c64bb 100644 --- a/arch/x86/kernel/cpu/mce/inject.c +++ b/arch/x86/kernel/cpu/mce/inject.c @@ -503,6 +503,8 @@ static void do_inject(void) i_mce.tsc = rdtsc_ordered(); + i_mce.status |= MCI_STATUS_VAL; + if (i_mce.misc) i_mce.status |= MCI_STATUS_MISCV; |