From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>,
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, 15 Jul 2020 21:45:59 +0200 [thread overview]
Message-ID: <524b87c5-0e94-1578-4395-fd53226d02aa@physik.fu-berlin.de> (raw)
In-Reply-To: <CAMuHMdXs_Fm93t=O9jJPLxcREZy-T53Z_U_RtHcvaWyV+ESdjg@mail.gmail.com>
Hi!
On 12/4/19 1:32 PM, Geert Uytterhoeven wrote:
>>>> 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
Any chance we can have another go at this? The original change
commit c5b27a889da92f4a969d61df77bd4f79ffce57c9 (refs/bisect/bad)
Author: Peter Zijlstra <peterz@infradead.org>
Date: Tue Sep 4 14:45:04 2018 +0200
sh/tlb: Convert SH to generic mmu_gather
Generic mmu_gather provides everything SH needs (range tracking and
cache coherency).
breaks systemd for me on my SH-7785LCR [1].
Adrian
> [1] https://marc.info/?l=linux-kernel&m=159479951822677&w=2
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
next prev parent reply other threads:[~2020-07-15 19:46 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-19 10:31 [PATCH v6 00/18] generic mmu_gather patches Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 01/18] asm-generic/tlb: Provide a comment Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 02/18] asm-generic/tlb: Provide HAVE_MMU_GATHER_PAGE_SIZE Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 03/18] asm-generic/tlb: Provide generic VIPT cache flush Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 04/18] asm-generic/tlb: Provide generic tlb_flush() based on flush_tlb_range() Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 05/18] asm-generic/tlb: Provide generic tlb_flush() based on flush_tlb_mm() Peter Zijlstra
2019-02-19 12:47 ` Will Deacon
2019-02-19 10:31 ` [PATCH v6 06/18] asm-generic/tlb: Conditionally provide tlb_migrate_finish() Peter Zijlstra
2019-02-19 12:47 ` Will Deacon
2019-02-19 13:41 ` Peter Zijlstra
2019-02-20 14:47 ` Will Deacon
2019-02-20 15:02 ` Matthew Wilcox
2019-02-19 10:31 ` [PATCH v6 07/18] asm-generic/tlb: Invert HAVE_RCU_TABLE_INVALIDATE Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 08/18] arm/tlb: Convert to generic mmu_gather Peter Zijlstra
2019-02-19 10:31 ` [PATCH v6 09/18] ia64/tlb: Conver " Peter Zijlstra
2019-02-19 12:47 ` Will Deacon
2019-02-21 2:52 ` Souptick Joarder
2019-02-19 10:31 ` [PATCH v6 10/18] sh/tlb: Convert SH " Peter Zijlstra
2019-12-03 11:19 ` Geert Uytterhoeven
2019-12-04 10:47 ` Peter Zijlstra
2019-12-04 12:32 ` Geert Uytterhoeven
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 [this message]
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
2019-02-19 10:31 ` [PATCH v6 11/18] um/tlb: Convert " Peter Zijlstra
2019-02-19 10:32 ` [PATCH v6 12/18] arch/tlb: Clean up simple architectures Peter Zijlstra
2019-02-19 10:32 ` [PATCH v6 13/18] asm-generic/tlb: Introduce HAVE_MMU_GATHER_NO_GATHER Peter Zijlstra
2019-02-19 12:47 ` Will Deacon
2019-02-19 10:32 ` [PATCH v6 14/18] s390/tlb: convert to generic mmu_gather Peter Zijlstra
2019-02-19 12:47 ` Will Deacon
2019-02-19 10:32 ` [PATCH v6 15/18] asm-generic/tlb: Remove arch_tlb*_mmu() Peter Zijlstra
2019-02-19 10:32 ` [PATCH v6 16/18] asm-generic/tlb: Remove HAVE_GENERIC_MMU_GATHER Peter Zijlstra
2019-02-19 10:32 ` [PATCH v6 17/18] asm-generic/tlb: Remove tlb_flush_mmu_free() Peter Zijlstra
2019-02-19 10:32 ` [PATCH v6 18/18] asm-generic/tlb: Remove tlb_table_flush() Peter Zijlstra
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