Linux-mm Archive on lore.kernel.org
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From: Rich Felker <dalias@libc.org>
To: Rob Landley <rob@landley.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	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>,
	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: Thu, 5 Dec 2019 14:23:14 -0500
Message-ID: <20191205192314.GC16318@brightrain.aerifal.cx> (raw)
In-Reply-To: <e2cf6780-ba7e-d6f6-9d15-92e182f98e84@landley.net>

On Thu, Dec 05, 2019 at 01:24:02PM -0600, Rob Landley wrote:
> On 12/4/19 4:47 AM, Peter Zijlstra wrote:
> > On Tue, Dec 03, 2019 at 12:19:00PM +0100, Geert Uytterhoeven wrote:
> >> Hoi Peter,
> >>
> >> 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 ?!?
> 
> No, but most people running this kind of hardware tend not to upgrade to current
> kernels on a regular basis.
> 
> The j-core guys tested the 5.3 release. I can't find an email about 5.4 so I
> dunno if that's been tested yet?

Being that this code is about mmu, does it affect nommu machines?
That's what we've got at present on the J-core side.

Rich


  reply index

Thread overview: 44+ 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
2019-12-05 19:24       ` Rob Landley
2019-12-05 19:23         ` Rich Felker [this message]
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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