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KVM: VMX: replace "fall through" with "return" to indicate different case

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The second "/* fall through */" in rmode_exception() makes code harder to
read. Replace it with "return" to indicate they are different cases, only
the #DB and #BP check vcpu->guest_debug, while others don't care. And this
also improves the readability.

Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Message-Id: <1582080348-20827-1-git-send-email-linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Miaohe Lin 2020-02-19 10:45:48 +08:00 committed by Paolo Bonzini
parent cb97c2d680
commit a8cfbae592
1 changed files with 2 additions and 4 deletions
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6
arch/x86/kvm/vmx/vmx.c
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@ -4626,10 +4626,8 @@ static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
return false;
/* fall through */
case DB_VECTOR:
if (vcpu->guest_debug &
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
return false;
/* fall through */
return !(vcpu->guest_debug &
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP));
case DE_VECTOR:
case OF_VECTOR:
case BR_VECTOR: