| commit | 0be0226f07d14b153a5eedf2bb86e1eb7dcefab5 | [log] [tgz] |
|---|---|---|
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | Mon May 11 22:55:21 2015 +0800 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Mon May 11 17:17:50 2015 +0200 |
| tree | a69e9c24597cd620922617e6315ba07b7bd63ca3 | |
| parent | 898761158be7682082955e3efa4ad24725305fc7 [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> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>