From: Arnd Bergmann <arnd@arndb.de>
To: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
kbuild test robot <lkp@intel.com>,
Parisc List <linux-parisc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] parisc: use -fno-strict-aliasing for decompressor
Date: Fri, 8 May 2020 23:43:16 +0200 [thread overview]
Message-ID: <CAK8P3a16Qb2-H5UGMftonvEAuJ2LrKMO4nVudg+JD6HtuYR==Q@mail.gmail.com> (raw)
In-Reply-To: <5849978b-7330-1dae-0896-7ecbc6083d34@gmx.de>
On Fri, May 8, 2020 at 11:40 PM Helge Deller <deller@gmx.de> wrote:
> On 08.05.20 11:35, Arnd Bergmann wrote:
> > An experimental patch series of mine reworks how warnings are processed
> > in Kbuild. A side effect is a new warning about a harmless aliasing
> > rule violation in an inline function:
> >
> > In file included from
> > include/linux/rhashtable-types.h:15:0,
> > from include/linux/ipc.h:7,
> > from include/uapi/linux/sem.h:5,
> > from include/linux/sem.h:5,
> > from include/linux/sched.h:15,
> > from include/linux/uaccess.h:6,
> > from arch/parisc/boot/compressed/misc.c:7:
> > include/linux/workqueue.h: In function 'work_static':
> > include/linux/workqueue.h:212:2: warning: dereferencing
> > type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
> > return *work_data_bits(work) & WORK_STRUCT_STATIC;
> >
> > Make the decompressor use -fno-strict-aliasing like the rest of
> > the kernel for consistency, and to ensure this warning never makes
> > it into a release.
> >
> > Reported-by: kbuild test robot <lkp@intel.com>
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> Acked-by: Helge Deller <deller@gmx.de>
>
> Arnd, will you take it through your trees when you push your experimental
> patches, or do you want me to take it through the parisc tree?
Please take it through your tree. It will take me a while to finish my
series, and having one less change will make it easier to review.
Arnd
prev parent reply other threads:[~2020-05-08 21:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 9:35 [PATCH] parisc: use -fno-strict-aliasing for decompressor Arnd Bergmann
2020-05-08 21:40 ` Helge Deller
2020-05-08 21:43 ` Arnd Bergmann [this message]
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