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authorMarcelo Tosatti <mtosatti@redhat.com>2008-06-11 19:52:53 -0300
committerAvi Kivity <avi@qumranet.com>2008-07-20 12:42:32 +0300
commit622395a9e63bf87a16faecf555ed02375cbae5b7 (patch)
treec4a8082660a4e4bf8f687a33921d292ae35f6394 /firmware/cpia2
parent7f39f8ac177db258200053074aa7a3d98656b1cf (diff)
KVM: only abort guest entry if timer count goes from 0->1
Only abort guest entry if the timer count went from 0->1, since for 1->2 or larger the bit will either be set already or a timer irq will have been injected. Using atomic_inc_and_test() for it also introduces an SMP barrier to the LAPIC version (thought it was unecessary because of timer migration, but guest can be scheduled to a different pCPU between exit and kvm_vcpu_block(), so there is the possibility for a race). Noticed by Avi. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'firmware/cpia2')
0 files changed, 0 insertions, 0 deletions