From: linmiaohe <linmiaohe@huawei.com>
To: <pbonzini@redhat.com>, <rkrcmar@redhat.com>,
<sean.j.christopherson@intel.com>, <vkuznets@redhat.com>,
<wanpengli@tencent.com>, <jmattson@google.com>, <joro@8bytes.org>,
<tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<hpa@zytor.com>
Cc: <linmiaohe@huawei.com>, <kvm@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <x86@kernel.org>
Subject: [PATCH v2] KVM: VMX: Add 'else' to split mutually exclusive case
Date: Mon, 17 Feb 2020 23:02:30 +0800 [thread overview]
Message-ID: <1581951750-17854-1-git-send-email-linmiaohe@huawei.com> (raw)
From: Miaohe Lin <linmiaohe@huawei.com>
Each if branch in handle_external_interrupt_irqoff() is mutually
exclusive. Add 'else' to make it clear and also avoid some unnecessary
check.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
v1->v2:
add braces to all if branches
---
arch/x86/kvm/vmx/vmx.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 9a6664886f2e..a13368b2719c 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6176,15 +6176,13 @@ static void handle_exception_nmi_irqoff(struct vcpu_vmx *vmx)
vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
/* if exit due to PF check for async PF */
- if (is_page_fault(vmx->exit_intr_info))
+ if (is_page_fault(vmx->exit_intr_info)) {
vmx->vcpu.arch.apf.host_apf_reason = kvm_read_and_reset_pf_reason();
-
/* Handle machine checks before interrupts are enabled */
- if (is_machine_check(vmx->exit_intr_info))
+ } else if (is_machine_check(vmx->exit_intr_info)) {
kvm_machine_check();
-
/* We need to handle NMIs before interrupts are enabled */
- if (is_nmi(vmx->exit_intr_info)) {
+ } else if (is_nmi(vmx->exit_intr_info)) {
kvm_before_interrupt(&vmx->vcpu);
asm("int $2");
kvm_after_interrupt(&vmx->vcpu);
--
2.19.1
next reply other threads:[~2020-02-17 15:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 15:02 linmiaohe [this message]
2020-02-17 16:40 ` [PATCH v2] KVM: VMX: Add 'else' to split mutually exclusive case Vitaly Kuznetsov
2020-02-19 16:19 ` Paolo Bonzini
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