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This provides better performance compared to Device GRE and also allows
unaligned accesses. Such memory is intended to be used with standard RAM
(e.g. framebuffers) and not I/O.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

(cherry picked from commit 4f00130b

)
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>