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Date: Wed, 27 May 2009 01:54:03 +0200 From: Andi Kleen <andi@...stfloor.org> To: linux-kernel@...r.kernel.org, hpa@...or.com, x86@...nel.org Cc: Andi Kleen <ak@...ux.intel.com> Subject: [PATCH 01/31] x86: MCE: Synchronize core after machine check handling From: Andi Kleen <ak@...ux.intel.com> Impact: Spec compliance The example code in the IA32 SDM recommends to synchronize the CPU after machine check handling. So do that here. Signed-off-by: Andi Kleen <ak@...ux.intel.com> --- 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 87f8198..249e3cf 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); -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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