commit c7ba5b48cc8ddc015a9e0463813ca1e60bc42c59
author Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Wed Jun 20 15:59:18 2012 +0800
committer Avi Kivity <avi@redhat.com> Wed Jul 11 16:51:20 2012 +0300
tree bb89a83af218d10f7d6f8ca4bae5c19fbfba7609
parent 49fde3406f3266c5af9430467672c20b63a31e83

KVM: MMU: fast path of handling guest page fault

If the the present bit of page fault error code is set, it indicates
the shadow page is populated on all levels, it means what we do is
only modify the access bit which can be done out of mmu-lock

Currently, in order to simplify the code, we only fix the page fault
caused by write-protect on the fast path

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>