From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 2 Apr 2015 09:04:05 +0000 (+0200)
Subject: KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages
X-Git-Tag: v3.2.70~79
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c36b570ffcc2cf8d0de724f24ac9fc99e2f16421;p=pandora-kernel.git

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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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