From: Paolo Bonzini <pbonzini@redhat.com>
To: Maxim Levitsky <mlevitsk@redhat.com>, kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Wanpeng Li <wanpengli@tencent.com>,
Borislav Petkov <bp@alien8.de>, Joerg Roedel <joro@8bytes.org>,
Jim Mattson <jmattson@google.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Sean Christopherson <seanjc@google.com>,
"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<x86@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH 1/7] KVM: VMX: read idt_vectoring_info a bit earlier
Date: Wed, 17 Feb 2021 17:06:39 +0100 [thread overview]
Message-ID: <09de977a-0275-0f4f-cf75-f45e4b5d9ca5@redhat.com> (raw)
In-Reply-To: <20210217145718.1217358-2-mlevitsk@redhat.com>
On 17/02/21 15:57, Maxim Levitsky wrote:
>
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index b3e36dc3f164..e428d69e21c0 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -6921,13 +6921,15 @@ static fastpath_t vmx_vcpu_run(struct kvm_vcpu *vcpu)
> if (unlikely((u16)vmx->exit_reason.basic == EXIT_REASON_MCE_DURING_VMENTRY))
> kvm_machine_check();
>
> + if (likely(!vmx->exit_reason.failed_vmentry))
> + vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
> +
Any reason for the if?
Paolo
next prev parent reply other threads:[~2021-02-17 16:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-17 14:57 [PATCH 0/7] KVM: random nested fixes Maxim Levitsky
2021-02-17 14:57 ` [PATCH 1/7] KVM: VMX: read idt_vectoring_info a bit earlier Maxim Levitsky
2021-02-17 16:06 ` Paolo Bonzini [this message]
2021-02-17 16:18 ` Maxim Levitsky
2021-02-17 16:21 ` Sean Christopherson
2021-02-17 16:29 ` Paolo Bonzini
2021-02-17 14:57 ` [PATCH 2/7] KVM: nSVM: move nested vmrun tracepoint to enter_svm_guest_mode Maxim Levitsky
2021-02-17 14:57 ` [PATCH 3/7] KVM: x86: add .complete_mmu_init arch callback Maxim Levitsky
2021-02-17 14:57 ` [PATCH 4/7] KVM: nVMX: move inject_page_fault tweak to .complete_mmu_init Maxim Levitsky
2021-02-17 17:29 ` Sean Christopherson
2021-02-17 17:37 ` Paolo Bonzini
2021-02-17 17:57 ` Sean Christopherson
2021-02-17 18:00 ` Paolo Bonzini
2021-02-17 18:49 ` Maxim Levitsky
2021-02-17 18:43 ` Maxim Levitsky
2021-02-18 9:45 ` Paolo Bonzini
2021-02-17 14:57 ` [PATCH 5/7] KVM: nSVM: fix running nested guests when npt=0 Maxim Levitsky
2021-02-17 15:27 ` Maxim Levitsky
2021-02-17 14:57 ` [PATCH 6/7] KVM: nVMX: don't load PDPTRS right after nested state set Maxim Levitsky
2021-02-17 17:52 ` Sean Christopherson
2021-02-17 18:06 ` Paolo Bonzini
2021-02-17 14:57 ` [PATCH 7/7] KVM: nSVM: call nested_svm_load_cr3 on nested state load Maxim Levitsky
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