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| author | Borislav Petkov <bp@suse.de> | 2021-11-01 16:43:33 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-12-13 14:13:12 +0100 |
| commit | b4813539d37fa31fed62cdfab7bd2dd8929c5b2e (patch) | |
| tree | dd3d0732f092c0dcc52d2ec2a26b4d2a76222ff4 /arch/x86/kernel/cpu/mce/core.c | |
| parent | 3c7ce80a818fa7950be123cac80cd078e5ac1013 (diff) | |
| download | linux-b4813539d37fa31fed62cdfab7bd2dd8929c5b2e.tar.bz2 | |
x86/mce: Mark mce_end() noinstr
It is called by the #MC handler which is noinstr.
Fixes
vmlinux.o: warning: objtool: do_machine_check()+0xbd6: call to memset() leaves .noinstr.text section
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20211208111343.8130-9-bp@alien8.de
Diffstat (limited to 'arch/x86/kernel/cpu/mce/core.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index ec0f7bb53477..4bdcca8493ca 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1064,10 +1064,13 @@ static int mce_start(int *no_way_out) * Synchronize between CPUs after main scanning loop. * This invokes the bulk of the Monarch processing. */ -static int mce_end(int order) +static noinstr int mce_end(int order) { - int ret = -1; u64 timeout = (u64)mca_cfg.monarch_timeout * NSEC_PER_USEC; + int ret = -1; + + /* Allow instrumentation around external facilities. */ + instrumentation_begin(); if (!timeout) goto reset; @@ -1108,7 +1111,8 @@ static int mce_end(int order) /* * Don't reset anything. That's done by the Monarch. */ - return 0; + ret = 0; + goto out; } /* @@ -1124,6 +1128,10 @@ reset: * Let others run again. */ atomic_set(&mce_executing, 0); + +out: + instrumentation_end(); + return ret; } |