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KVM: VMX: optimize #PF injection when MAXPHYADDR does not match
authorPaolo Bonzini <pbonzini@redhat.com>
Fri, 10 Jul 2020 15:48:10 +0000 (17:48 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 10 Jul 2020 21:01:52 +0000 (17:01 -0400)
commit8c4182bd27cafc2b0f94564485c89ed366c1572c
tree4a1175a70e143b14d4c47a8ab90dd1cb1a8a3c78tree | snapshot
parent1dbf5d68af6ffdb1c8b0d38ee565768e22e2c3abcommit | diff
KVM: VMX: optimize #PF injection when MAXPHYADDR does not match

Ignore non-present page faults, since those cannot have reserved
bits set.

When running access.flat with "-cpu Haswell,phys-bits=36", the
number of trapped page faults goes down from 8872644 to 3978948.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200710154811.418214-9-mgamal@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/vmx/vmx.c diff | blob | history
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