linux-kernel - Re: [PATCH v2 7/8] powerpc/mm: remove linear mapping if __add_pages() fails in arch_add

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Message-ID: <20201117155125.GF15987@linux>
Date:   Tue, 17 Nov 2020 16:51:25 +0100
From:   Oscar Salvador <osalvador@...e.de>
To:     David Hildenbrand <david@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linuxppc-dev@...ts.ozlabs.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Rashmica Gupta <rashmica.g@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...nel.org>,
        Michal Hocko <mhocko@...e.com>,
        Wei Yang <richard.weiyang@...ux.alibaba.com>
Subject: Re: [PATCH v2 7/8] powerpc/mm: remove linear mapping if
 __add_pages() fails in arch_add_memory()

On Wed, Nov 11, 2020 at 03:53:21PM +0100, David Hildenbrand wrote:
> Let's revert what we did in case seomthing goes wrong and we return an
"something" :-)
> error - as already done on arm64 and s390x.
> 
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Rashmica Gupta <rashmica.g@...il.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Mike Rapoport <rppt@...nel.org>
> Cc: Michal Hocko <mhocko@...e.com>
> Cc: Oscar Salvador <osalvador@...e.de>
> Cc: Wei Yang <richard.weiyang@...ux.alibaba.com>
> Signed-off-by: David Hildenbrand <david@...hat.com>

Reviewed-by: Oscar Salvador <osalvador@...e.de>

-- 
Oscar Salvador
SUSE L3