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KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages
authorPaolo Bonzini <pbonzini@redhat.com>
Thu, 2 Apr 2015 09:04:05 +0000 (11:04 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 6 Jun 2015 06:19:54 +0000 (23:19 -0700)
commit0b93bc9d1b0ca52d58a2015809b69ad188d0866c
tree7a2191a2131f692c7b712d594d5d93c01d299766tree | snapshot (tar.gz zip)
parent521c4dd4415ca24519468add60f6586fde913470commit | diff
KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages

commit 898761158be7682082955e3efa4ad24725305fc7 upstream.

smep_andnot_wp is initialized in kvm_init_shadow_mmu and shadow pages
should not be reused for different values of it.  Thus, it has to be
added to the mask in kvm_mmu_pte_write.

Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kvm/mmu.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)