From: Dan Carpenter <dan.carpenter@oracle.com>
To: Eugenio Perez Martin <eperezma@redhat.com>
Cc: "Kamde, Tanuj" <tanuj.kamde@amd.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
Wu Zongyong <wuzongyong@linux.alibaba.com>,
Si-Wei Liu <si-wei.liu@oracle.com>,
"pabloc@xilinx.com" <pabloc@xilinx.com>,
Eli Cohen <elic@nvidia.com>, Zhang Min <zhang.min9@zte.com.cn>,
"lulu@redhat.com" <lulu@redhat.com>,
"Piotr.Uminski@intel.com" <Piotr.Uminski@intel.com>,
"martinh@xilinx.com" <martinh@xilinx.com>,
Xie Yongji <xieyongji@bytedance.com>,
"dinang@xilinx.com" <dinang@xilinx.com>,
"habetsm.xilinx@gmail.com" <habetsm.xilinx@gmail.com>,
Longpeng <longpeng2@huawei.com>,
"lvivier@redhat.com" <lvivier@redhat.com>,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
"Dawar, Gautam" <gautam.dawar@amd.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"ecree.xilinx@gmail.com" <ecree.xilinx@gmail.com>,
"hanand@xilinx.com" <hanand@xilinx.com>,
"martinpo@xilinx.com" <martinpo@xilinx.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Zhu Lingshan <lingshan.zhu@intel.com>
Subject: Re: [PATCH v3 2/4] vhost-vdpa: introduce STOP backend feature bit
Date: Thu, 26 May 2022 22:06:30 +0300 [thread overview]
Message-ID: <20220526190630.GJ2168@kadam> (raw)
In-Reply-To: <CAJaqyWe4311B6SK997eijEJyhwnAxkBUGJ_0iuDNd=wZSt0DmQ@mail.gmail.com>
On Thu, May 26, 2022 at 07:00:06PM +0200, Eugenio Perez Martin wrote:
> > It feels like returning any literal that isn't 1 or 0 should trigger a
> > warning... I've written that and will check it out tonight.
> >
>
> I'm not sure this should be so strict, or "literal" does not include pointers?
>
What I mean in exact terms, is that if you're returning a known value
and the function returns bool then the known value should be 0 or 1.
Don't "return 3;". This new warning will complain if you return a known
pointer as in "return &a;". It won't complain if you return an
unknown pointer "return p;".
> As an experiment, can Smatch be used to count how many times a
> returned pointer is converted to int / bool before returning vs not
> converted?
I'm not super excited to write that code... :/
>
> I find Smatch interesting, especially when switching between projects
> frequently. Does it support changing the code like clang-format? To
> offload cognitive load to tools is usually good :).
No. Coccinelle does that really well though.
regards,
dan carpenter
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next prev parent reply other threads:[~2022-05-26 19:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220525105922.2413991-1-eperezma@redhat.com>
[not found] ` <20220525105922.2413991-3-eperezma@redhat.com>
[not found] ` <BL1PR12MB582520CC9CE024149141327499D69@BL1PR12MB5825.namprd12.prod.outlook.com>
[not found] ` <CAJaqyWc9_ErCg4whLKrjNyP5z2DZno-LJm7PN=-9uk7PUT4fJw@mail.gmail.com>
2022-05-26 9:07 ` [PATCH v3 2/4] vhost-vdpa: introduce STOP backend feature bit Stefano Garzarella
[not found] ` <CAJaqyWf7PumZXy1g3PbbTNCdn3u1XH3XQF73tw2w8Py5yLkSAg@mail.gmail.com>
2022-05-26 13:20 ` Dan Carpenter
[not found] ` <CAJaqyWe4311B6SK997eijEJyhwnAxkBUGJ_0iuDNd=wZSt0DmQ@mail.gmail.com>
2022-05-26 19:06 ` Dan Carpenter [this message]
[not found] ` <CAJaqyWdfWgC-uthR0aCjitCrBf=ca=Ee1oAB=JumffK=eSLgng@mail.gmail.com>
2022-05-27 7:36 ` Dan Carpenter
2022-05-30 14:27 ` Dan Carpenter
2022-05-30 15:12 ` Dan Carpenter
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