xen/smp: unbind irqworkX when unplugging vCPUs.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 21 May 2012 13:19:38 +0000 (09:19 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 21 May 2012 13:26:04 +0000 (09:26 -0400)
commit2f1bd67d544d3c086fb5101513f4b6c8f4291b43
tree73bfdd40a8f303948cbaf21b9a35a81685c1a598
parent4b3451ad1313134821ad13b6fe821d0b4409aa18
xen/smp: unbind irqworkX when unplugging vCPUs.

The git commit  1ff2b0c303698e486f1e0886b4d9876200ef8ca5
"xen: implement IRQ_WORK_VECTOR handler" added the functionality
to have a per-cpu "irqworkX" for the IPI APIC functionality.
However it missed the unbind when a vCPU is unplugged resulting
in an orphaned per-cpu interrupt line for unplugged vCPU:

  30:        216          0   xen-dyn-event     hvc_console
  31:        810          4   xen-dyn-event     eth0
  32:         29          0   xen-dyn-event     blkif
- 36:          0          0  xen-percpu-ipi       irqwork2
- 37:        287          0   xen-dyn-event     xenbus
+ 36:        287          0   xen-dyn-event     xenbus
 NMI:          0          0   Non-maskable interrupts
 LOC:          0          0   Local timer interrupts
 SPU:          0          0   Spurious interrupts

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
arch/x86/xen/smp.c