tree b2bbd81042f48e862e0c0b8743edc932102640bb
parent 34bb10b79de7df118de832f6832efb630e646577
author Rik van Riel <riel@redhat.com> 1296572008 -0500
committer Marcelo Tosatti <mtosatti@redhat.com> 1300378109 -0300

KVM: use yield_to instead of sleep in kvm_vcpu_on_spin

Instead of sleeping in kvm_vcpu_on_spin, which can cause gigantic
slowdowns of certain workloads, we instead use yield_to to get
another VCPU in the same KVM guest to run sooner.

This seems to give a 10-15% speedup in certain workloads.

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