KVM: Avoid double interrupt injection with vapic

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After an interrupt injection, the PPR changes, and we have to reflect that
into the vapic.  This causes a KVM_REQ_EVENT to be set, which causes the
whole interrupt injection routine to be run again (harmlessly).

Optimize by only setting KVM_REQ_EVENT if the ppr was lowered; otherwise
there is no chance that a new injection is needed.

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

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Avi Kivity 2010-10-25 15:23:55 +02:00

parent 82ca2d108b

commit 83bcacb1a5

1 changed files with 2 additions and 1 deletions

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arch/x86/kvm/lapic.c

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