linux-kernel - Re: [PATCH 0/8] Convert powerpc to default topdown mmap layout

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Message-ID: <e1fea487-8014-658d-84cd-ea1d7c89ee08@csgroup.eu>
Date:   Wed, 24 Nov 2021 14:40:57 +0100
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Nicholas Piggin <npiggin@...il.com>, alex@...ti.fr,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 0/8] Convert powerpc to default topdown mmap layout



Le 24/11/2021 à 14:21, Nicholas Piggin a écrit :
> Excerpts from Christophe Leroy's message of November 22, 2021 6:48 pm:
>> This series converts powerpc to default topdown mmap layout.
>>
>> powerpc provides its own arch_get_unmapped_area() only when
>> slices are needed, which is only for book3s/64. First part of
>> the series moves slices into book3s/64 specific directories
>> and cleans up other subarchitectures.
>>
>> Then a small modification is done to core mm to allow
>> powerpc to still provide its own arch_randomize_brk()
>>
>> Last part converts to default topdown mmap layout.
> 
> A nice series but will clash badly with the CONFIG_HASH_MMU
> series of course. One will have to be rebased if they are
> both to be merged.
> 

No worry, it should be an issue.

If you already forsee that series being merged soon, I can rebase my 
series on top of it just now.

Christophe