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KVM: x86/tdp_mmu: Merge prefetch and access checks for spurious faults

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Combine prefetch and is_access_allowed() checks into a unified path to
detect spurious faults, since both cases now share identical logic.

No functional changes.

Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Link: https://lore.kernel.org/r/20250318013210.5701-1-yan.y.zhao@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Yan Zhao 2025-03-18 09:32:10 +08:00 committed by Sean Christopherson
parent ea9fcdf76d
commit d17cc13cc4
1 changed files with 1 additions and 5 deletions
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6
arch/x86/kvm/mmu/tdp_mmu.c
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@ -1153,12 +1153,8 @@ static int tdp_mmu_map_handle_target_level(struct kvm_vcpu *vcpu,
if (WARN_ON_ONCE(sp->role.level != fault->goal_level))
return RET_PF_RETRY;
if (fault->prefetch && is_shadow_present_pte(iter->old_spte) &&
is_last_spte(iter->old_spte, iter->level))
return RET_PF_SPURIOUS;
if (is_shadow_present_pte(iter->old_spte) &&
is_access_allowed(fault, iter->old_spte) &&
(fault->prefetch || is_access_allowed(fault, iter->old_spte)) &&
is_last_spte(iter->old_spte, iter->level))
return RET_PF_SPURIOUS;