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Subject: Re: [PATCH v5 1/2] KVM: X86: Introduce handle_ud()
To: David Hildenbrand <david@redhat.com>, Wanpeng Li <kernellwp@gmail.com>,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Andrew Cooper <andrew.cooper3@citrix.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Liran Alon <liran.alon@oracle.com>
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From: Paolo Bonzini <pbonzini@redhat.com>
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Message-ID: <16957e9b-103a-0fd5-9e2b-084e9ebc3773@redhat.com>
Date: Wed, 4 Apr 2018 19:12:13 +0200
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On 04/04/2018 13:54, David Hildenbrand wrote:
>> +{
>> +	enum emulation_result er;
>> +
>> +	er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD);
>> +	if (er == EMULATE_USER_EXIT)
>> +		return 0;
>> +	if (er != EMULATE_DONE)
>> +		kvm_queue_exception(vcpu, UD_VECTOR);
>> +	return 1;
> I would now actually prefer
> 
> if (er == EMULATE_DONE)
> 	return 1 ...

Why?  The return statement would be duplicated.

Paolo