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From:   Vitaly Kuznetsov <vkuznets@redhat.com>
To:     Dan Carpenter <dan.carpenter@oracle.com>
Cc:     Mao Wenan <maowenan@huawei.com>, pbonzini@redhat.com,
        rkrcmar@redhat.com, sean.j.christopherson@intel.com,
        wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org,
        tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com,
        kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
        kernel-janitors@vger.kernel.org
Subject: Re: [PATCH -next] KVM: x86: remove set but not used variable 'called'
In-Reply-To: <20191119121423.GB5604@kadam>
References: <20191119030640.25097-1-maowenan@huawei.com> <87o8x8gjr5.fsf@vitty.brq.redhat.com> <20191119121423.GB5604@kadam>
Date:   Tue, 19 Nov 2019 13:28:32 +0100
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Dan Carpenter <dan.carpenter@oracle.com> writes:

> On Tue, Nov 19, 2019 at 12:58:54PM +0100, Vitaly Kuznetsov wrote:
>> Mao Wenan <maowenan@huawei.com> writes:
>>=20
>> > Fixes gcc '-Wunused-but-set-variable' warning:
>> >
>> > arch/x86/kvm/x86.c: In function kvm_make_scan_ioapic_request_mask:
>> > arch/x86/kvm/x86.c:7911:7: warning: variable called set but not
>> > used [-Wunused-but-set-variable]
>> >
>> > It is not used since commit 7ee30bc132c6 ("KVM: x86: deliver KVM
>> > IOAPIC scan request to target vCPUs")
>>=20
>> Better expressed as=20
>>=20
>> Fixes: 7ee30bc132c6 ("KVM: x86: deliver KVM IOAPIC scan request to targe=
t vCPUs")
>>=20
>
> There is sort of a debate about this whether the Fixes tag should be
> used if it's only a cleanup.
>

I have to admit I'm involved in doing backporting sometimes and I really
appreciate Fixes: tags. Just so you know on which side of the debate I
am :-)

--=20
Vitaly