Andrey Konovalov d224d76f24 UPSTREAM: drm/radeon: untag user pointers in radeon_gem_userptr_ioctl ... (Upstream commit 4fdfae8d8f). This patch is a part of a series that extends kernel ABI to allow to pass tagged user pointers (with the top byte set to something else other than 0x00) as syscall arguments. In radeon_gem_userptr_ioctl() an MMU notifier is set up with a (tagged) userspace pointer. The untagged address should be used so that MMU notifiers for the untagged address get correctly matched up with the right BO. This funcation also calls radeon_ttm_tt_pin_userptr(), which uses provided user pointers for vma lookups, which can only by done with untagged pointers. This patch untags user pointers in radeon_gem_userptr_ioctl(). Link: http://lkml.kernel.org/r/c856babeb67195b35603b8d5ba386a2819cec5ff.1563904656.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Reviewed-by: Kees Cook <keescook@chromium.org> Suggested-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Eric Auger <eric.auger@redhat.com> Cc: Jens Wiklander <jens.wiklander@linaro.org> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Bug: 135692346 Change-Id: I7b33a1e1994b588c307cf5d909233de9bc0abddc		2019-10-07 15:27:41 -04:00
..
drm	UPSTREAM: drm/radeon: untag user pointers in radeon_gem_userptr_ioctl	2019-10-07 15:27:41 -04:00
host1x	gpu: host1x: Increase maximum DMA segment size	2019-07-31 07:26:59 +02:00
ipu-v3	gpu: ipu-v3: ipu-ic: Fix saturation bit offset in TPMEM	2019-07-26 09:14:29 +02:00
vga	vga_switcheroo: Fix missing gpu_bound call at audio client registration	2018-11-13 11:09:00 -08:00
Makefile