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Re: [PATCH 1/3] KVM: x86: simplify ept_misconfig




2017-08-12 0:52 GMT+08:00 Paolo Bonzini <pbonzini@xxxxxxxxxx>:
> Calling handle_mmio_page_fault() has been unnecessary since commit
> e9ee956e311d ("KVM: x86: MMU: Move handle_mmio_page_fault() call to
> kvm_mmu_page_fault()", 2016-02-22)
>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>

Reviewed-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>

> ---
>  arch/x86/kvm/vmx.c | 13 +++----------
>  1 file changed, 3 insertions(+), 10 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index df8d2f127508..45fb0ea78ee8 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -6410,17 +6410,10 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu)
>                 return kvm_skip_emulated_instruction(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;
> -
> -       if (unlikely(ret == RET_MMIO_PF_INVALID))
> -               return kvm_mmu_page_fault(vcpu, gpa, 0, NULL, 0);
> -
> -       if (unlikely(ret == RET_MMIO_PF_RETRY))
> -               return 1;
> +       ret = kvm_mmu_page_fault(vcpu, gpa, PFERR_RSVD_MASK, NULL, 0);
> +       if (ret >= 0)
> +               return ret;
>
>         /* It is the real ept misconfig */
>         WARN_ON(1);
> --
> 1.8.3.1
>
>