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| author | Andi Kleen <andi@firstfloor.org> | 2009-05-27 21:56:51 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-05-28 09:24:14 -0700 |
| commit | 88921be30296e126896ee4d30758f989d1c4ddfb (patch) | |
| tree | 4af6f9a4e8fa2532fb240a02c780879917ad08c7 | |
| parent | 5706001aacba5d3db5f224ca135e5e91a30be39c (diff) | |
| download | blackbird-op-linux-88921be30296e126896ee4d30758f989d1c4ddfb.tar.gz blackbird-op-linux-88921be30296e126896ee4d30758f989d1c4ddfb.zip | |
x86, mce: synchronize core after machine check handling
The example code in the IA32 SDM recommends to synchronize the CPU
after machine check handling. So do that here.
[ Impact: Spec compliance ]
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 156cdf6d9181..495c96808668 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -328,6 +328,8 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) * Don't clear MCG_STATUS here because it's only defined for * exceptions. */ + + sync_core(); } EXPORT_SYMBOL_GPL(machine_check_poll); @@ -501,6 +503,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) mce_wrmsrl(MSR_IA32_MCG_STATUS, 0); out2: atomic_dec(&mce_entry); + sync_core(); } EXPORT_SYMBOL_GPL(do_machine_check); |
