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Subject: Re: [PATCH v3 05/37] KVM: x86: Export kvm_propagate_fault() (as
 kvm_inject_emulated_page_fault)
To:     Sean Christopherson <sean.j.christopherson@intel.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>
Cc:     Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, Ben Gardon <bgardon@google.com>,
        Junaid Shahid <junaids@google.com>,
        Liran Alon <liran.alon@oracle.com>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        John Haxby <john.haxby@oracle.com>,
        Miaohe Lin <linmiaohe@huawei.com>,
        Tom Lendacky <thomas.lendacky@amd.com>
References: <20200320212833.3507-1-sean.j.christopherson@intel.com>
 <20200320212833.3507-6-sean.j.christopherson@intel.com>
 <87sghz844a.fsf@vitty.brq.redhat.com>
 <20200323162433.GM28711@linux.intel.com>
From:   Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <7012fd88-5590-e50d-cee2-d14fb54ce742@redhat.com>
Date:   Tue, 24 Mar 2020 00:56:32 +0100
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On 23/03/20 17:24, Sean Christopherson wrote:
>> We don't seem to use the return value a lot, actually,
>> inject_emulated_exception() seems to be the only one, the rest just call
>> it without checking the return value. Judging by the new name, I'd guess
>> that the function returns whether it was able to inject the exception or
>> not but this doesn't seem to be the case. My suggestion would then be to
>> make it return 'void' and return 'fault->nested_page_fault' separately
>> in inject_emulated_exception().
> Oooh, I like that idea.  The return from the common helper also confuses me
> every time I look at it.
> 

Separate patch, please.  I'm not sure it makes a great difference though.

Paolo