On Mon, May 06, 2019 at 06:30:52PM +0200, Andrey Konovalov wrote:
This patch is a part of a series that extends arm64 kernel ABI to allow to pass tagged user pointers (with the top byte set to something else other than 0x00) as syscall arguments.
do_pages_move() is used in the implementation of the move_pages syscall.
Untag user pointers in this function.
Signed-off-by: Andrey Konovalov andreyknvl@google.com
Reviewed-by: Catalin Marinas catalin.marinas@arm.com