KVM: Add "exiting guest mode" state
Currently we keep track of only two states: guest mode and host mode. This patch adds an "exiting guest mode" state that tells us that an IPI will happen soon, so unless we need to wait for the IPI, we can avoid it completely. Also 1: No need atomically to read/write ->mode in vcpu's thread 2: reorganize struct kvm_vcpu to make ->mode and ->requests in the same cache line explicitly Signed-off-by:Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
parent
d48ead8b
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