[PATCH v2 3/8] powerpc/mm: factor out creating/removing linear mapping

[Oscar Salvador]

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 at ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Cc: Paul Mackerras <paulus at samba.org>
> Cc: Rashmica Gupta <rashmica.g at gmail.com>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Cc: Mike Rapoport <rppt at kernel.org>
> Cc: Michal Hocko <mhocko at suse.com>
> Cc: Oscar Salvador <osalvador at suse.de>
> Cc: Wei Yang <richard.weiyang at linux.alibaba.com>
> Signed-off-by: David Hildenbrand <david at redhat.com>

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

-- 
Oscar Salvador
SUSE L3