From 24fd78a81f6d3fe7f7a440c8629f9c52cd5f830e Mon Sep 17 00:00:00 2001 From: Aravind Gopalakrishnan Date: Wed, 6 May 2015 06:58:56 -0500 Subject: x86/mce/amd: Introduce deferred error interrupt handler Deferred errors indicate error conditions that were not corrected, but require no action from S/W (or action is optional).These errors provide info about a latent UC MCE that can occur when a poisoned data is consumed by the processor. Processors that report these errors can be configured to generate APIC interrupts to notify OS about the error. Provide an interrupt handler in this patch so that OS can catch these errors as and when they happen. Currently, we simply log the errors and exit the handler as S/W action is not mandated. Signed-off-by: Aravind Gopalakrishnan Cc: Tony Luck Cc: x86-ml Cc: linux-edac Link: http://lkml.kernel.org/r/1430913538-1415-5-git-send-email-Aravind.Gopalakrishnan@amd.com Signed-off-by: Borislav Petkov --- arch/x86/kernel/irqinit.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/x86/kernel/irqinit.c') diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index cd10a6437264..d7ec6e7b2b5b 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -135,6 +135,10 @@ static void __init apic_intr_init(void) alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt); #endif +#ifdef CONFIG_X86_MCE_AMD + alloc_intr_gate(DEFERRED_ERROR_VECTOR, deferred_error_interrupt); +#endif + #ifdef CONFIG_X86_LOCAL_APIC /* self generated IPI for local APIC timer */ alloc_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt); -- cgit v1.2.3