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KVM: x86/mmu: Drop redundant trace_kvm_mmu_set_spte() in the TDP MMU

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Remove TDP MMU's call to trace_kvm_mmu_set_spte() that is done for both
shadow-present SPTEs and MMIO SPTEs.  It's fully redundant for the
former, and unnecessary for the latter.  This aligns TDP MMU tracing
behavior with that of the legacy MMU.

Fixes: 33dd3574f5 ("kvm: x86/mmu: Add existing trace points to TDP MMU")
Cc: Ben Gardon <bgardon@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210225204749.1512652-9-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2021-02-25 12:47:33 -08:00 committed by Paolo Bonzini
parent a54aa15c6b
commit 3849e0924e
1 changed files with 2 additions and 3 deletions
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5
arch/x86/kvm/mmu/tdp_mmu.c
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@ -771,12 +771,11 @@ static int tdp_mmu_map_handle_target_level(struct kvm_vcpu *vcpu, int write,
trace_mark_mmio_spte(rcu_dereference(iter->sptep), iter->gfn, trace_mark_mmio_spte(rcu_dereference(iter->sptep), iter->gfn,
new_spte); new_spte);
ret = RET_PF_EMULATE; ret = RET_PF_EMULATE;
} else } else {
trace_kvm_mmu_set_spte(iter->level, iter->gfn, trace_kvm_mmu_set_spte(iter->level, iter->gfn,
rcu_dereference(iter->sptep)); rcu_dereference(iter->sptep));
}
trace_kvm_mmu_set_spte(iter->level, iter->gfn,
rcu_dereference(iter->sptep));
if (!prefault) if (!prefault)
vcpu->stat.pf_fixed++; vcpu->stat.pf_fixed++;