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KVM: x86/mmu: Use is_removed_spte() instead of open coded equivalents

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Use the is_removed_spte() helper instead of open coding the check.

No functional change intended.

Cc: Ben Gardon <bgardon@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210225204749.1512652-23-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2021-02-25 12:47:47 -08:00 committed by Paolo Bonzini
parent 8f366ae6d8
commit 7a51393ae0
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kvm/mmu/tdp_mmu.c
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@ -488,7 +488,7 @@ static inline bool tdp_mmu_set_spte_atomic(struct kvm *kvm,
* Do not change removed SPTEs. Only the thread that froze the SPTE
* may modify it.
*/
if (iter->old_spte == REMOVED_SPTE)
if (is_removed_spte(iter->old_spte))
return false;
if (cmpxchg64(rcu_dereference(iter->sptep), iter->old_spte,
@ -563,7 +563,7 @@ static inline void __tdp_mmu_set_spte(struct kvm *kvm, struct tdp_iter *iter,
* should be used. If operating under the MMU lock in write mode, the
* use of the removed SPTE should not be necessary.
*/
WARN_ON(iter->old_spte == REMOVED_SPTE);
WARN_ON(is_removed_spte(iter->old_spte));
WRITE_ONCE(*rcu_dereference(iter->sptep), new_spte);