KVM: Don't update PPR on any APIC read

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The current code will update the PPR on almost any APIC read; however
that's only required if we read the PPR.

kvm_update_ppr() shows up in some profiles, albeit with a low usage (~1%).
This should reduce it further (it will still be called during interrupt
processing).

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Avi Kivity 2012-07-22 17:41:00 +03:00 • committed by Marcelo Tosatti

parent ade38c311a

commit 4a4541a40e

1 changed files with 4 additions and 2 deletions

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arch/x86/kvm/lapic.c

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