10 Jun
2019
10 Jun
'19
2:29 p.m.
On Mon, Jun 03, 2019 at 06:55:09PM +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.
get_vaddr_frames uses provided user pointers for vma lookups, which can only by done with untagged pointers. Instead of locating and changing all callers of this function, perform untagging in it.
Signed-off-by: Andrey Konovalov andreyknvl@google.com
Acked-by: Catalin Marinas catalin.marinas@arm.com