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KVM: x86: simplify is_mmio_spte

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We can simply look at bits 52-53 to identify MMIO entries in KVM's page
tables.  Therefore, there is no need to pass a mask to kvm_mmu_set_mmio_spte_mask.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2020-05-19 05:04:49 -04:00
parent f4cfcd2d5a
commit e7581caca4
4 changed files with 6 additions and 11 deletions
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arch/x86/kvm/svm/svm.c
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@@ -780,7 +780,7 @@ static __init void svm_adjust_mmio_mask(void)
*/
mask = (mask_bit < 52) ? rsvd_bits(mask_bit, 51) | PT_PRESENT_MASK : 0;
kvm_mmu_set_mmio_spte_mask(mask, mask, PT_WRITABLE_MASK | PT_USER_MASK);
kvm_mmu_set_mmio_spte_mask(mask, PT_WRITABLE_MASK | PT_USER_MASK);
}
static void svm_hardware_teardown(void)