KVM: Use rsvd_bits_mask in load_pdptrs()

Also remove bit 5-6 from rsvd_bits_mask per latest SDM.

Signed-off-by: Eddie Dong <Eddie.Dong@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b2c8e28..da3ad3c 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -225,11 +225,6 @@ static int is_nx(struct kvm_vcpu *vcpu)
        return vcpu->arch.shadow_efer & EFER_NX;
 }
 
-static int is_present_pte(unsigned long pte)
-{
-       return pte & PT_PRESENT_MASK;
-}
-
 static int is_shadow_present_pte(u64 pte)
 {
        return pte != shadow_trap_nonpresent_pte
@@ -2195,6 +2190,9 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level)
                context->rsvd_bits_mask[1][0] = ~0ull;
                break;
        case PT32E_ROOT_LEVEL:
+               context->rsvd_bits_mask[0][2] =
+                       rsvd_bits(maxphyaddr, 63) |
+                       rsvd_bits(7, 8) | rsvd_bits(1, 2);      /* PDPTE */
                context->rsvd_bits_mask[0][1] = exb_bit_rsvd |
                        rsvd_bits(maxphyaddr, 62);              /* PDE */
                context->rsvd_bits_mask[0][0] = exb_bit_rsvd |

diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index eaab214..3494a2f 100644 (file)
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -75,4 +75,9 @@ static inline int is_paging(struct kvm_vcpu *vcpu)
        return vcpu->arch.cr0 & X86_CR0_PG;
 }
 
+static inline int is_present_pte(unsigned long pte)
+{
+       return pte & PT_PRESENT_MASK;
+}
+
 #endif

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 7fe83fe..70ee81e 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -234,7 +234,8 @@ int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3)
                goto out;
        }
        for (i = 0; i < ARRAY_SIZE(pdpte); ++i) {
-               if ((pdpte[i] & 1) && (pdpte[i] & 0xfffffff0000001e6ull)) {
+               if (is_present_pte(pdpte[i]) &&
+                   (pdpte[i] & vcpu->arch.mmu.rsvd_bits_mask[0][2])) {
                        ret = 0;
                        goto out;
                }