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authorLai Jiangshan <[email protected]>2021-11-18 19:08:13 +0800
committerPaolo Bonzini <[email protected]>2021-12-08 04:25:10 -0500
commitb46a13cb7ea1137b2e01dfaafcacd5cd79db8390 (patch)
tree4eac5e4a020acb5a79f2f11ea622473898dfb83a
parent41e35604eaff2266ba8523787ebe99c5ca4c4045 (diff)
KVM: X86: Calculate quadrant when !role.gpte_is_8_bytes
role.quadrant is only valid when gpte size is 4 bytes and only be calculated when gpte size is 4 bytes. Although "vcpu->arch.mmu->root_level <= PT32_ROOT_LEVEL" also means gpte size is 4 bytes, but using "!role.gpte_is_8_bytes" is clearer Signed-off-by: Lai Jiangshan <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
-rw-r--r--arch/x86/kvm/mmu/mmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index c1b6ade6b4a7..c22ed56ece25 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -2087,7 +2087,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
role.level = level;
role.direct = direct;
role.access = access;
- if (!direct_mmu && vcpu->arch.mmu->root_level <= PT32_ROOT_LEVEL) {
+ if (!direct_mmu && !role.gpte_is_8_bytes) {
quadrant = gaddr >> (PAGE_SHIFT + (PT64_PT_BITS * level));
quadrant &= (1 << ((PT32_PT_BITS - PT64_PT_BITS) * level)) - 1;
role.quadrant = quadrant;