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xen/resume: only send BITMAP IPIs if CPUs > 1

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This is quite harmless on HEAD, but it's worse on stable/10 where
lapic_ipi_vectored is the local APIC native IPI implementation. On
stable/10 cpu_ops.ipi_vectored should be used instead.

MFC after:	5 days
Sponsored by:	Citrix Systems R&D
This commit is contained in:
royger 2016-05-11 10:10:25 +00:00
parent c897e8c2f1
commit e9e752a175
1 changed files with 2 additions and 2 deletions
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4
sys/dev/xen/control/control.c
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@ -260,14 +260,14 @@ xctrl_suspend()
gnttab_resume(NULL);
#ifdef SMP
/* Send an IPI_BITMAP in case there are pending bitmap IPIs. */
lapic_ipi_vectored(IPI_BITMAP_VECTOR, APIC_IPI_DEST_ALL);
if (!CPU_EMPTY(&cpu_suspend_map)) {
/*
* Now that event channels have been initialized,
* resume CPUs.
*/
resume_cpus(cpu_suspend_map);
/* Send an IPI_BITMAP in case there are pending bitmap IPIs. */
lapic_ipi_vectored(IPI_BITMAP_VECTOR, APIC_IPI_DEST_ALL);
}
#endif