linux-kernel - Re: [PATCH] sparc32: use PUD rather than PGD to get PMD in srmmu_nocache

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Message-ID: <3bc16457-55d1-3d1f-6a78-fc3e95a1855f@roeck-us.net>
Date:   Sat, 23 May 2020 19:09:19 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Mike Rapoport <rppt@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Anatoly Pugachev <matorola@...il.com>,
        sparclinux@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH] sparc32: use PUD rather than PGD to get PMD in
 srmmu_nocache_init()

On 5/23/20 5:15 PM, Linus Torvalds wrote:
> On Sat, May 23, 2020 at 3:47 PM Guenter Roeck <linux@...ck-us.net> wrote:
>>
>> This quite innocent looking patch crashes all my sparc32 boot tests.
>> Crash log and bisect results below. Reverting it fixes the problem.
> 
> It should also fixed by 0cfc8a8d70dc ("sparc32: fix page table
> traversal in srmmu_nocache_init()"). No?
> 

Yes, it is. Sorry for the noise. 0cfc8a8d70dc wasn't available
when I started the bisect, and I didn't re-check afterwards.

Guenter