summaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
authorMarcelo Tosatti <mtosatti@redhat.com>2008-06-12 00:52:53 +0200
committerAvi Kivity <avi@qumranet.com>2008-07-20 11:42:32 +0200
commit622395a9e63bf87a16faecf555ed02375cbae5b7 (patch)
treec4a8082660a4e4bf8f687a33921d292ae35f6394 /kernel
parentKVM: Add coalesced MMIO support (ia64 part) (diff)
downloadlinux-622395a9e63bf87a16faecf555ed02375cbae5b7.tar.xz
linux-622395a9e63bf87a16faecf555ed02375cbae5b7.zip
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 'kernel')
0 files changed, 0 insertions, 0 deletions