| commit | edc90b7dc4ceef62ef0ad9cc6c3f5dc770e83ad2 | [log] [tgz] |
|---|---|---|
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | Mon May 11 22:55:21 2015 +0800 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Tue May 19 20:52:36 2015 +0200 |
| tree | 36a2ab127ab4f6a01fc33190abf3e06682f6ceba | |
| parent | 428e3d08574b77876ea5e71f294f91bd8afa51b5 [diff] |
KVM: MMU: fix SMAP virtualization KVM may turn a user page to a kernel page when kernel writes a readonly user page if CR0.WP = 1. This shadow page entry will be reused after SMAP is enabled so that kernel is allowed to access this user page Fix it by setting SMAP && !CR0.WP into shadow page's role and reset mmu once CR4.SMAP is updated Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>