linux-kernel - Re: [PATCH] KVM: x86: eliminate some unreachable code

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Date:   Tue, 18 Feb 2020 01:19:00 +0000
From:   linmiaohe <linmiaohe@...wei.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
CC:     "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "rkrcmar@...hat.com" <rkrcmar@...hat.com>,
        "sean.j.christopherson@...el.com" <sean.j.christopherson@...el.com>,
        "wanpengli@...cent.com" <wanpengli@...cent.com>,
        "jmattson@...gle.com" <jmattson@...gle.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "hpa@...or.com" <hpa@...or.com>
Subject: Re: [PATCH] KVM: x86: eliminate some unreachable code

Vitaly Kuznetsov <vkuznets@...hat.com> writes:
>linmiaohe <linmiaohe@...wei.com> writes:
>
>> @@ -4505,7 +4505,6 @@ static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
>>  	case GP_VECTOR:
>>  	case MF_VECTOR:
>>  		return true;
>> -	break;
>>  	}
>>  	return false;
>>  }
>
>Unrelated to your change but what I don't in rmode_exception() is the second "/* fall through */" instead of just 'return true;', it makes it harder to read.

Agree. I will do it in another patch as it's unrelated to this one. Many Thanks for your review and advice.