From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH] kvm: vmx: Use the hardware provided GPA instead of page walk
Date: Fri, 27 Jan 2017 19:34:48 +0100 [thread overview]
Message-ID: <1485542088-18610-1-git-send-email-pbonzini@redhat.com> (raw)
As in the SVM patch, the guest physical address is passed by
VMX to x86_emulate_instruction already, so mark the GPA as available
in vcpu->arch.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/vmx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 7c3e42623090..0828b02b5af2 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6382,6 +6382,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
EPT_VIOLATION_EXECUTABLE))
? PFERR_PRESENT_MASK : 0;
+ vcpu->arch.gpa_available = true;
vcpu->arch.exit_qualification = exit_qualification;
return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0);
@@ -6399,6 +6400,7 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu)
}
ret = handle_mmio_page_fault(vcpu, gpa, true);
+ vcpu->arch.gpa_available = true;
if (likely(ret == RET_MMIO_PF_EMULATE))
return x86_emulate_instruction(vcpu, gpa, 0, NULL, 0) ==
EMULATE_DONE;
@@ -8517,6 +8519,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
u32 vectoring_info = vmx->idt_vectoring_info;
trace_kvm_exit(exit_reason, vcpu, KVM_ISA_VMX);
+ vcpu->arch.gpa_available = false;
/*
* Flush logged GPAs PML buffer, this will make dirty_bitmap more
--
1.8.3.1
next reply other threads:[~2017-01-27 18:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-27 18:34 Paolo Bonzini [this message]
2017-02-07 17:21 ` [PATCH] kvm: vmx: Use the hardware provided GPA instead of page walk Paolo Bonzini
2017-02-07 20:52 ` Radim Krčmář
2017-02-08 8:16 ` Paolo Bonzini
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