d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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:
Roger Pau Monné 2016-05-11 10:10:25 +00:00
parent 5d35d77707
commit 4ea0b4ad1a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=299423
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/dev/xen/control/control.c
View File

@ -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