From: Yujie Liu <yujie.liu@intel.com>
To: Sean Christopherson <seanjc@google.com>
Cc: kernel test robot <lkp@intel.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
<oe-kbuild-all@lists.linux.dev>,
Linux Memory Management List <linux-mm@kvack.org>,
Maxim Levitsky <mlevitsk@redhat.com>
Subject: Re: [linux-next:master 5175/8213] arch/x86/kvm/vmx/hyperv_evmcs.h:133:30: sparse: sparse: cast truncates bits from constant value (1b009b becomes 9b)
Date: Fri, 29 Dec 2023 22:35:40 +0800 [thread overview]
Message-ID: <ZY7ZPPqXIC8Cp2n/@yujie-X299> (raw)
In-Reply-To: <ZYBgDTkt_tZVbfnx@google.com>
Hi Sean,
On Mon, Dec 18, 2023 at 07:06:53AM -0800, Sean Christopherson wrote:
> On Sun, Dec 17, 2023, kernel test robot wrote:
> > Hi Vitaly,
> >
> > FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
> >
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head: 17cb8a20bde66a520a2ca7aad1063e1ce7382240
> > commit: e7ad84db4d718e18c7a133e941ba4c7d4c6d4cbf [5175/8213] KVM: VMX: Split off hyperv_evmcs.{ch}
> > config: i386-randconfig-061-20231217 (https://download.01.org/0day-ci/archive/20231217/202312171230.oCaBKFUr-lkp@intel.com/config)
> > compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231217/202312171230.oCaBKFUr-lkp@intel.com/reproduce)
>
> Known shortcoming, just ignore it.
>
> https://lore.kernel.org/all/87v89jmc3q.fsf@redhat.com
Sorry for the late reply. We noticed this is another case of sparse
shortcoming. As you suggested in [1], we still keep this sparse warning
enabled, and we are planning to implement "disabling just the ROL16()
warning" for the bot in January. We will come back once this is done.
[1] https://lore.kernel.org/all/ZWoCEUvk3Nlmlb9v@google.com/
Thanks,
Yujie
prev parent reply other threads:[~2023-12-29 14:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-17 4:13 kernel test robot
2023-12-18 15:06 ` Sean Christopherson
2023-12-29 14:35 ` Yujie Liu [this message]
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