linux-kernel - Re: [PATCH v2 6/8] KVM: x86: Fold 'enum kvm_ex_reg' definitions into 'enum kvm

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Date:   Wed, 09 Oct 2019 13:27:42 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Cc:     Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Reto Buerki <reet@...elabs.ch>,
        Liran Alon <liran.alon@...cle.com>,
        Radim Krčmář <rkrcmar@...hat.com>
Subject: Re: [PATCH v2 6/8] KVM: x86: Fold 'enum kvm_ex_reg' definitions into 'enum kvm_reg'

Paolo Bonzini <pbonzini@...hat.com> writes:

> On 30/09/19 11:25, Vitaly Kuznetsov wrote:
>>> -enum kvm_reg_ex {
>>>  	VCPU_EXREG_PDPTR = NR_VCPU_REGS,
>> (Personally, I would've changed that to NR_VCPU_REGS + 1)
>> 
>
> Why?
>

Just so every entry in the enum is different and NR_VCPU_REGS acts as a
guardian.

-- 
Vitaly