From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Nicholas Piggin <npiggin@gmail.com>,
Linux-Arch <linux-arch@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Russell King <linux@armlinux.org.uk>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Rik van Riel <riel@surriel.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
Linux-sh list <linux-sh@vger.kernel.org>,
Guenter Roeck <linux@roeck-us.net>
Subject: Re: [PATCH v6 10/18] sh/tlb: Convert SH to generic mmu_gather
Date: Wed, 04 Dec 2019 12:32:58 +0000 [thread overview]
Message-ID: <CAMuHMdXs_Fm93t=O9jJPLxcREZy-T53Z_U_RtHcvaWyV+ESdjg@mail.gmail.com> (raw)
In-Reply-To: <20191204104733.GR2844@hirez.programming.kicks-ass.net>
Hoi Peter,
On Wed, Dec 4, 2019 at 11:48 AM Peter Zijlstra <peterz@infradead.org> wrote:
> On Tue, Dec 03, 2019 at 12:19:00PM +0100, Geert Uytterhoeven wrote:
> > On Tue, Feb 19, 2019 at 11:35 AM Peter Zijlstra <peterz@infradead.org> wrote:
> > > Generic mmu_gather provides everything SH needs (range tracking and
> > > cache coherency).
> > >
> > > Cc: Will Deacon <will.deacon@arm.com>
> > > Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
> > > Cc: Andrew Morton <akpm@linux-foundation.org>
> > > Cc: Nick Piggin <npiggin@gmail.com>
> > > Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
> > > Cc: Rich Felker <dalias@libc.org>
> > > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> >
> > I got remote access to an SH7722-based Migo-R again, which spews a long
> > sequence of BUGs during userspace startup. I've bisected this to commit
> > c5b27a889da92f4a ("sh/tlb: Convert SH to generic mmu_gather").
>
> Whoopsy.. also, is this really the first time anybody booted an SH
> kernel in over a year ?!?
Nah, but the v5.4-rc3 I booted recently on qemu -M r2d had
CONFIG_PGTABLE_LEVELS=2, so it didn't show the problem.
> > Do you have a clue?
>
> Does the below help?
Unfortunately not.
> diff --git a/arch/sh/include/asm/pgalloc.h b/arch/sh/include/asm/pgalloc.h
> index 22d968bfe9bb..73a2c00de6c5 100644
> --- a/arch/sh/include/asm/pgalloc.h
> +++ b/arch/sh/include/asm/pgalloc.h
> @@ -36,9 +36,8 @@ do { \
> #if CONFIG_PGTABLE_LEVELS > 2
> #define __pmd_free_tlb(tlb, pmdp, addr) \
> do { \
> - struct page *page = virt_to_page(pmdp); \
> - pgtable_pmd_page_dtor(page); \
> - tlb_remove_page((tlb), page); \
> + pgtable_pmd_page_dtor(pmdp); \
expected ‘struct page *’ but argument is of type ‘pmd_t * {aka struct
<anonymous> *}’
> + tlb_remove_page((tlb), (pmdp)); \
likewise
> } while (0);
> #endif
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2019-12-04 12:32 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190219103148.192029670@infradead.org>
[not found] ` <20190219103233.443069009@infradead.org>
2019-12-03 11:19 ` [PATCH v6 10/18] sh/tlb: Convert SH to generic mmu_gather Geert Uytterhoeven
2019-12-04 10:47 ` Peter Zijlstra
2019-12-04 12:32 ` Geert Uytterhoeven [this message]
2019-12-04 13:22 ` Guenter Roeck
2019-12-04 15:17 ` Geert Uytterhoeven
2019-12-04 19:03 ` Guenter Roeck
2019-12-04 13:34 ` Peter Zijlstra
2019-12-04 15:07 ` Geert Uytterhoeven
2019-12-04 16:41 ` Peter Zijlstra
2019-12-05 15:26 ` Geert Uytterhoeven
2020-07-15 19:45 ` John Paul Adrian Glaubitz
2019-12-05 19:24 ` Rob Landley
2019-12-05 19:23 ` Rich Felker
2020-07-15 19:49 ` John Paul Adrian Glaubitz
2019-12-05 19:30 ` John Paul Adrian Glaubitz
2019-12-05 22:56 ` Guenter Roeck
2019-12-06 13:38 ` John Paul Adrian Glaubitz
2019-12-06 14:03 ` Guenter Roeck
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