Commit 70ae77f4 authored May 02, 2007 by Fernando Luis [** ISO-8859-1 charset **] VzquezCao Committed by Andi Kleen May 02, 2007

[PATCH] x86-64: Use safe_apic_wait_icr_idle in __send_IPI_dest_field - x86_64



Use safe_apic_wait_icr_idle to check ICR idle bit if the vector is
NMI_VECTOR to avoid potential hangups in the event of crash when kdump
tries to stop the other CPUs.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>

parent f5efb41e

include/asm-x86_64/ipi.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -85,6 +85,9 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector, unsigned
		/*
		* Wait for idle.
		*/
		if (unlikely(vector == NMI_VECTOR))
		safe_apic_wait_icr_idle();
		else
		apic_wait_icr_idle();

		/*