linux-kernel - Re: [PATCH v7 16/23] powerpc/e500: Switch to 64 bits PGD on 85xx (32 bits)

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Message-ID: <5cc43ed9-b4f8-49f5-99ee-b411bb144085@roeck-us.net>
Date: Wed, 7 Aug 2024 07:51:15 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 Nicholas Piggin <npiggin@...il.com>, "linux-mm@...ck.org"
 <linux-mm@...ck.org>, Peter Xu <peterx@...hat.com>,
 Jason Gunthorpe <jgg@...dia.com>, Andrew Morton <akpm@...ux-foundation.org>,
 "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
 Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v7 16/23] powerpc/e500: Switch to 64 bits PGD on 85xx (32
 bits)

On 8/7/24 03:11, Christophe Leroy wrote:
> Hi,
> 
> Le 31/07/2024 à 18:35, Guenter Roeck a écrit :
>> On 7/31/24 08:36, LEROY Christophe wrote:
>>>
>>> Hi Guenter,
>>> Thanks for this report. I'm afk this week, i"ll have a look at it in more détails next week.
>>> But to be sûre, does that Oops match the bisected commit ? Because pmd_leaf()  for e500 doesn't exist yet so pmd_write() shouldnt be called.
>>> I did validate all my changes with mpc8544 on qemu when i implemented this séries, using map_hugetlb mm selftest. What test tool are you using ?
>>
>> Nothing special; it is just a qemu boot test with various module test and debug options enabled,
>> using a root file system generated with buildroot.
> 
> I still don't get anything with mpc85xx_defconfig.
> 
> Can you tell with debug options you use and which module tests ?
> 

Please see http://server.roeck-us.net/qemu/ppc-v6.11-rc2/.

Thanks,
Guenter