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authorSuresh Siddha <suresh.b.siddha@intel.com>2010-03-15 14:33:06 -0800
committerIngo Molnar <mingo@elte.hu>2010-03-16 06:36:35 +0100
commit36e9e1eab777e077f7484d309ff676d0568e27d1 (patch)
tree488fd5fb3ee1b3e755ddd08e57e3fc55e22babee /arch/x86/include/asm/linkage.h
parenta3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff)
x86: Handle legacy PIC interrupts on all the cpu's
Ingo Molnar reported that with the recent changes of not statically blocking IRQ0_VECTOR..IRQ15_VECTOR's on all the cpu's, broke an AMD platform (with Nvidia chipset) boot when "noapic" boot option is used. On this platform, legacy PIC interrupts are getting delivered to all the cpu's instead of just the boot cpu. Thus not initializing the vector to irq mapping for the legacy irq's resulted in not handling certain interrupts causing boot hang. Fix this by initializing the vector to irq mapping on all the logical cpu's, if the legacy IRQ is handled by the legacy PIC. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> [ -v2: io-apic-enabled improvement ] Acked-by: Yinghai Lu <yinghai@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> LKML-Reference: <1268692386.3296.43.camel@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/linkage.h')
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