linux-kernel - Re: [kbuild-all] Re: [PATCH] kvm: fix boolreturn.cocci warnings

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Date:   Tue, 25 May 2021 16:46:31 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Rong Chen <rong.a.chen@...el.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        kernel test robot <lkp@...el.com>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [kbuild-all] Re: [PATCH] kvm: fix boolreturn.cocci warnings

On Tue, May 25, 2021, Rong Chen wrote:
> 
> 
> On 5/25/21 3:11 PM, Peter Zijlstra wrote:
> > On Tue, May 25, 2021 at 01:59:40PM +0800, kernel test robot wrote:
> > > From: kernel test robot <lkp@...el.com>
> > > 
> > > arch/arm64/kvm/mmu.c:1203:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool
> > > arch/arm64/kvm/mmu.c:1173:9-10: WARNING: return of 0/1 in function 'kvm_set_spte_gfn' with return type bool
> > > arch/arm64/kvm/mmu.c:1216:9-10: WARNING: return of 0/1 in function 'kvm_test_age_gfn' with return type bool
> > > arch/arm64/kvm/mmu.c:1159:9-10: WARNING: return of 0/1 in function 'kvm_unmap_gfn_range' with return type bool
> > > 
> > >   Return statements in functions returning bool should use
> > >   true/false instead of 1/0.
> > > Generated by: scripts/coccinelle/misc/boolreturn.cocci
> > Per 2b076054e524 ("remove boolinit.cocci"), I have a very dim view of
> > this sort of thing.
> 
> Hi Peterz,
> 
> Sorry for the noise, we'll disable the check.
> 
> > 
> > > Fixes: 63b3f96e1a98 ("kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT")
> > *how* ?!?
> 
> The bot is stupid

LOL.  FWIW, it's not _that_ stupid, or maybe it's the broken clock adage...  The
proper fix is sitting in the KVM tree, it should soon make its way to Linus.

  fcb8283920b1 ("KVM: arm64: Fix boolreturn.cocci warnings")