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Date:   Tue, 17 Nov 2020 16:27:02 +0100
From:   Oscar Salvador <osalvador@suse.de>
To:     David Hildenbrand <david@redhat.com>
Cc:     linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        linuxppc-dev@lists.ozlabs.org,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Rashmica Gupta <rashmica.g@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mike Rapoport <rppt@kernel.org>,
        Michal Hocko <mhocko@suse.com>,
        Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: Re: [PATCH v2 3/8] powerpc/mm: factor out creating/removing linear
 mapping
Message-ID: <20201117152701.GC15987@linux>
References: <20201111145322.15793-1-david@redhat.com>
 <20201111145322.15793-4-david@redhat.com>
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On Wed, Nov 11, 2020 at 03:53:17PM +0100, David Hildenbrand wrote:
> We want to stop abusing memory hotplug infrastructure in memtrace code
> to perform allocations and remove the linear mapping. Instead we will use
> alloc_contig_pages() and remove the linear mapping manually.
> 
> Let's factor out creating/removing the linear mapping into
> arch_create_linear_mapping() / arch_remove_linear_mapping() - so in the
> future, we might be able to have whole arch_add_memory() /
> arch_remove_memory() be implemented in common code.
> 
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Rashmica Gupta <rashmica.g@gmail.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Mike Rapoport <rppt@kernel.org>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Oscar Salvador <osalvador@suse.de>
> Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
> Signed-off-by: David Hildenbrand <david@redhat.com>

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

-- 
Oscar Salvador
SUSE L3