diff options
| author | Avi Kivity <avi@redhat.com> | 2010-05-12 11:48:18 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-19 11:41:09 +0300 |
| commit | 3dbe141595faa48a067add3e47bba3205b79d33c (patch) | |
| tree | a7d37004d0021298ed305810543ae6a3a4ed79e2 /Documentation/mn10300 | |
| parent | a3d204e28579427609c3d15d2310127ebaa47d94 (diff) | |
KVM: MMU: Segregate shadow pages with different cr0.wp
When cr0.wp=0, we may shadow a gpte having u/s=1 and r/w=0 with an spte
having u/s=0 and r/w=1. This allows excessive access if the guest sets
cr0.wp=1 and accesses through this spte.
Fix by making cr0.wp part of the base role; we'll have different sptes for
the two cases and the problem disappears.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'Documentation/mn10300')
0 files changed, 0 insertions, 0 deletions