On Mon, May 06, 2019 at 06:30:59PM +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. > > ib_uverbs_(re)reg_mr() use provided user pointers for vma lookups (through > e.g. mlx4_get_umem_mr()), which can only by done with untagged pointers. > > Untag user pointers in these functions. > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > --- > drivers/infiniband/core/uverbs_cmd.c | 4 ++++ > 1 file changed, 4 insertions(+) I think this is OK.. We should really get it tested though.. Leon? Jason
