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KVM: MMU: Allow 4K ptes with bit 7 (PAT) set

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Bit 7 is perfectly legal in the 4K page leve; it is used for the PAT.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2009-05-19 13:29:27 +03:00
parent e244584fe3
commit 29a4b9333b
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/mmu.c
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@ -2157,7 +2157,7 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level)
else
/* 32 bits PSE 4MB page */
context->rsvd_bits_mask[1][1] = rsvd_bits(13, 21);
context->rsvd_bits_mask[1][0] = ~0ull;
context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[1][0];
break;
case PT32E_ROOT_LEVEL:
context->rsvd_bits_mask[0][2] =
@ -2170,7 +2170,7 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level)
context->rsvd_bits_mask[1][1] = exb_bit_rsvd |
rsvd_bits(maxphyaddr, 62) |
rsvd_bits(13, 20); /* large page */
context->rsvd_bits_mask[1][0] = ~0ull;
context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[1][0];
break;
case PT64_ROOT_LEVEL:
context->rsvd_bits_mask[0][3] = exb_bit_rsvd |
@ -2186,7 +2186,7 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level)
context->rsvd_bits_mask[1][1] = exb_bit_rsvd |
rsvd_bits(maxphyaddr, 51) |
rsvd_bits(13, 20); /* large page */
context->rsvd_bits_mask[1][0] = ~0ull;
context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[1][0];
break;
}
}