tree 9d507b851ea7bd667cdd50dde640e47e0d4773e9
parent 39c3b86e5c193e09f69f0e99c93600a4999ffc60
author Avi Kivity <avi@qumranet.com> 1181233110 +0300
committer Avi Kivity <avi@qumranet.com> 1184576746 +0300

KVM: Flush remote tlbs when reducing shadow pte permissions

When a vcpu causes a shadow tlb entry to have reduced permissions, it
must also clear the tlb on remote vcpus.  We do that by:

- setting a bit on the vcpu that requests a tlb flush before the next entry
- if the vcpu is currently executing, we send an ipi to make sure it
  exits before we continue

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