[PATCH 0/2] powerpc/xive: fix CPU hot unplug

Cédric Le Goater clg at kaod.org
Sat Sep 23 18:26:54 AEST 2017


Hi,

Here are a couple of small fixes to support CPU hot unplug. There are
still some issues to be investigated as, in some occasions, after a
couple of plug and unplug, the cpu which was removed receives a 'lost'
interrupt. This showed to be the decrementer under QEMU.

Nevertheless, these patches are required and provide a significant
improvement to support CPU removal.

Tested under a phyp and a XIVE QEMU model for pseries.

Thanks,

C.

Cédric Le Goater (2):
  powerpc/xive: fix IPI reset
  powerpc/xive: fix cpu removal

 arch/powerpc/sysdev/xive/common.c | 8 ++++++++
 arch/powerpc/sysdev/xive/spapr.c  | 4 ++++
 2 files changed, 12 insertions(+)

-- 
2.13.5



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