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KVM: Use rsvd_bits_mask in load_pdptrs()

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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>
This commit is contained in:
Dong, Eddie 2009-03-31 23:03:45 +08:00 committed by Avi Kivity
parent 93ba03c2e2
commit 20c466b561
3 changed files with 10 additions and 6 deletions
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8
arch/x86/kvm/mmu.c
View File

@ -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 |

5
arch/x86/kvm/mmu.h
View File

@ -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

3
arch/x86/kvm/x86.c
View File

@ -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;
}