[PATCH v5 4/5] arm64: mm: Only remove nomap flag for initrd

[Catalin Marinas]

On Tue, Jun 14, 2022 at 05:21:55PM +0800, Wupeng Ma wrote:
> From: Ma Wupeng <mawupeng1 at huawei.com>
> 
> Commit 177e15f0c144 ("arm64: add the initrd region to the linear mapping explicitly")
> remove all the flags of the memory used by initrd. This is fine since
> MEMBLOCK_MIRROR is not used in arm64.
> 
> However with mirrored feature introduced to arm64, this will clear the mirrored
> flag used by initrd, which will lead to error log printed by
> find_zone_movable_pfns_for_nodes() if the lower 4G range has some non-mirrored
> memory.
> 
> To solve this problem, only MEMBLOCK_NOMAP flag will be removed via
> memblock_clear_nomap().
> 
> Signed-off-by: Ma Wupeng <mawupeng1 at huawei.com>
> Reviewed-by: Ard Biesheuvel <ardb at kernel.org>

Acked-by: Catalin Marinas <catalin.marinas at arm.com>