| commit | 7819026eefee53eaaac3fdce1a2f157c7ea943fe | [log] [tgz] |
|---|---|---|
| author | Marcelo Tosatti <marcelo@kvack.org> | Tue Dec 11 19:12:27 2007 -0500 |
| committer | Avi Kivity <avi@qumranet.com> | Wed Jan 30 17:53:21 2008 +0200 |
| tree | e5ee690406a8ebe381ce5d712f010a5a0c706c4c | |
| parent | 1d075434149c38d457c30d1f11d9c39210b0bb79 [diff] |
KVM: MMU: Fix SMP shadow instantiation race There is a race where VCPU0 is shadowing a pagetable entry while VCPU1 is updating it, which results in a stale shadow copy. Fix that by comparing the contents of the cached guest pte with the current guest pte after write-protecting the guest pagetable. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>