linux-kernel - Re: [PATCH v2 1/4] mm: pagewalk: Fix walk for hugepage tables

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Message-ID: <874kdm1rim.fsf@mpe.ellerman.id.au>
Date:   Fri, 25 Jun 2021 14:45:37 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@...roup.eu>,
        akpm@...ux-foundation.org
Cc:     linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Oliver O'Halloran <oohall@...il.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Paul Mackerras <paulus@...ba.org>, dja@...ens.net,
        Steven Price <steven.price@....com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH v2 1/4] mm: pagewalk: Fix walk for hugepage tables

Christophe Leroy <christophe.leroy@...roup.eu> writes:
> Hi Michael,
>
> Le 19/04/2021 à 12:47, Christophe Leroy a écrit :
>> Pagewalk ignores hugepd entries and walk down the tables
>> as if it was traditionnal entries, leading to crazy result.
>> 
>> Add walk_hugepd_range() and use it to walk hugepage tables.
>
> I see you took patch 2 and 3 of the series.

Yeah I decided those were bug fixes so could be taken separately.

> Do you expect Andrew to take patch 1 via mm tree, and then you'll take
> patch 4 once mm tree is merged ?

I didn't feel I could take patch 1 via the powerpc tree without risking
conflicts.

Andrew could take patch 1 and 4 via mm, though he might not want to pick
them up this late.

I guess step one would be to repost 1 and 4 as a new series. Either they
can go via mm, or for 5.15 I could probably take them both as long as I
pick them up early enough.

cheers