linux-kernel - Re: [PATCH 06/10] KVM: nVMX: Convert local exit_reason to u16 in ...enter_non_root

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Date:   Tue, 17 Mar 2020 18:40:38 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.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, Xiaoyao Li <xiaoyao.li@...el.com>
Subject: Re: [PATCH 06/10] KVM: nVMX: Convert local exit_reason to u16 in
 ...enter_non_root_mode()

On 17/03/20 06:29, Sean Christopherson wrote:
>>>  
>>>  	load_vmcs12_host_state(vcpu, vmcs12);
>>> -	vmcs12->vm_exit_reason = exit_reason | VMX_EXIT_REASONS_FAILED_VMENTRY;
>>> +	vmcs12->vm_exit_reason = VMX_EXIT_REASONS_FAILED_VMENTRY | exit_reason;
>> My personal preference would be to do
>>  (u32)exit_reason | VMX_EXIT_REASONS_FAILED_VMENTRY 
>> instead but maybe I'm just not in love with implicit type convertion in C.
> Either way works for me.  Paolo?
> 

Flip a coin? :)  I think your version is fine.

Paolo