From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
kernel test robot <lkp@intel.com>,
Balbir Singh <sblbir@amazon.com>,
kbuild-all@lists.01.org,
Sparse Mailing-list <linux-sparse@vger.kernel.org>
Subject: Re: [tglx-devel:x86/l1dflush 7/9] arch/x86/mm/tlb.c:354:13: sparse: sparse: incorrect type in initializer (different address spaces)
Date: Tue, 27 Apr 2021 21:23:09 +0200 [thread overview]
Message-ID: <20210427192309.4xlodmvsppcdoa4l@mail> (raw)
In-Reply-To: <CAHk-=wiJ7_LCn19AGj+8mS5bV1jr4S1_6errsnfoZc0PdCNp9A@mail.gmail.com>
On Tue, Apr 27, 2021 at 10:00:48AM -0700, Linus Torvalds wrote:
> On Mon, Apr 26, 2021 at 11:37 PM Thomas Gleixner <tglx@linutronix.de> wrote:
> >
> > > > 354 if (this_cpu_read(cpu_info.smt_active)) {
> >
> > That's a valid construct and the kernel of full of percpuvar.member reads/writes.
>
> Hmm. "cpu_info" doesn't seem to be marked as a percpu data structure.
>
> Is this perhaps a UP config? Because we have:
Yes, most probably.
Just to be sure, I checked with i386_defconfig (which is SMP) and
sparse doesn't complain (but then does if CONFIG_SMP is set to 'n').
-- Luc
next prev parent reply other threads:[~2021-04-27 19:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <202104271144.G4fgnYlt-lkp@intel.com>
2021-04-27 6:37 ` [tglx-devel:x86/l1dflush 7/9] arch/x86/mm/tlb.c:354:13: sparse: sparse: incorrect type in initializer (different address spaces) Thomas Gleixner
2021-04-27 17:00 ` Linus Torvalds
2021-04-27 19:23 ` Luc Van Oostenryck [this message]
2021-04-27 19:54 ` Thomas Gleixner
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