KVM: MMU: split reset_rsvds_bits_mask_ept

Since shadow ept page tables and Intel nested guest page tables have the
same format, split reset_rsvds_bits_mask_ept so that the logic can be
reused by later patches which check zero bits on sptes

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d58e6ccc01ba791e260d9128a56e5411129442b0..a965f3f58586b4fd40d2455974da5be9c27db920 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3660,11 +3660,10 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu,
                                is_pse(vcpu));
 }
 
-static void reset_rsvds_bits_mask_ept(struct kvm_vcpu *vcpu,
-               struct kvm_mmu *context, bool execonly)
+static void
+__reset_rsvds_bits_mask_ept(struct rsvd_bits_validate *rsvd_check,
+                           int maxphyaddr, bool execonly)
 {
-       struct rsvd_bits_validate *rsvd_check = &context->guest_rsvd_check;
-       int maxphyaddr = cpuid_maxphyaddr(vcpu);
        int pte;
 
        rsvd_check->rsvd_bits_mask[0][3] =
@@ -3693,6 +3692,13 @@ static void reset_rsvds_bits_mask_ept(struct kvm_vcpu *vcpu,
        }
 }
 
+static void reset_rsvds_bits_mask_ept(struct kvm_vcpu *vcpu,
+               struct kvm_mmu *context, bool execonly)
+{
+       __reset_rsvds_bits_mask_ept(&context->guest_rsvd_check,
+                                   cpuid_maxphyaddr(vcpu), execonly);
+}
+
 static void update_permission_bitmask(struct kvm_vcpu *vcpu,
                                      struct kvm_mmu *mmu, bool ept)
 {