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Diffstat (limited to 'arch/x86/kvm/vmx/nested.c')
-rw-r--r--arch/x86/kvm/vmx/nested.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 61c83424285c..b6f4411b613e 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2588,12 +2588,9 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
nested_ept_init_mmu_context(vcpu);
/*
- * This sets GUEST_CR0 to vmcs12->guest_cr0, possibly modifying those
- * bits which we consider mandatory enabled.
- * The CR0_READ_SHADOW is what L2 should have expected to read given
- * the specifications by L1; It's not enough to take
- * vmcs12->cr0_read_shadow because on our cr0_guest_host_mask we
- * have more bits than L1 expected.
+ * Override the CR0/CR4 read shadows after setting the effective guest
+ * CR0/CR4. The common helpers also set the shadows, but they don't
+ * account for vmcs12's cr0/4_guest_host_mask.
*/
vmx_set_cr0(vcpu, vmcs12->guest_cr0);
vmcs_writel(CR0_READ_SHADOW, nested_read_cr0(vmcs12));