For performance, BO page mappings can stay in place even if the
map counter has returned to 0. In these cases, the existing page
mapping has to be reused by the next vmap operation. Otherwise
a new mapping would be installed and the old mapping's pages leak.

Fix the issue by reusing existing page mappings for vmap operations.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Fixes: 1086db71 ("drm/vram-helper: Remove invariant parameters from internal kmap function")
Acked-by: NChristian König <christian.koenig@amd.com>
Tested-by: NEli Cohen <elic@nvidia.com>
Reported-by: NEli Cohen <elic@nvidia.com>
Reported-by: Nkernel test robot <oliver.sang@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Christian König <christian.koenig@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210118144639.27307-1-tzimmermann@suse.de

Commit 7053e0ea ("drm/vram-helper: stop using TTM placement flags")
cleared the BO placement flags if top-down placement had been selected.
Hence, BOs that were supposed to go into VRAM are now placed in a default
location in system memory.

Trying to scanout the incorrectly pinned BO results in displayed garbage
and an error message.

[  146.108127] ------------[ cut here ]------------
[  146.1V08180] WARNING: CPU: 0 PID: 152 at drivers/gpu/drm/drm_gem_vram_helper.c:284 drm_gem_vram_offset+0x59/0x60 [drm_vram_helper]
...
[  146.108591]  ast_cursor_page_flip+0x3e/0x150 [ast]
[  146.108622]  ast_cursor_plane_helper_atomic_update+0x8a/0xc0 [ast]
[  146.108654]  drm_atomic_helper_commit_planes+0x197/0x4c0
[  146.108699]  drm_atomic_helper_commit_tail_rpm+0x59/0xa0
[  146.108718]  commit_tail+0x103/0x1c0
...
[  146.109302] ---[ end trace d901a1ba1d949036 ]---

Fix the bug by keeping the placement flags. The top-down placement flag
is stored in a separate variable.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Fixes: 7053e0ea ("drm/vram-helper: stop using TTM placement flags")
Reported-by: Pu Wen <puwen@hygon.cn> [for 5.10-rc1]
Tested-by: NPu Wen <puwen@hygon.cn>
Cc: Christian König <christian.koenig@amd.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200921142536.4392-1-tzimmermann@suse.de
(cherry picked from commit b8f8dbf6)
[pulled into fixes from drm-next]
Signed-off-by: NDave Airlie <airlied@redhat.com>

Some identifiers have different names between their prototypes
and the kernel-doc markup.

Others need to be fixed, as kernel-doc markups should use this format:
        identifier - description
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/12d4ca26f6843618200529ce5445063734d38c04.1605521731.git.mchehab+huawei@kernel.org

Currently drivers get called to move a buffer, but if they have to
move it temporarily through another space (SYSTEM->VRAM via TT)
then they can end up with a lot of ttm->driver->ttm call stacks,
if the temprorary space moves requires eviction.

Instead of letting the driver do all the placement/space for the
temporary, allow it to report back (-EMULTIHOP) and a placement (hop)
to the move code, which will then do the temporary move, and the
correct placement move afterwards.

This removes a lot of code from drivers, at the expense of
adding some midlayering. I've some further ideas on how to turn
it inside out, but I think this is a good solution to the call
stack problems.

v2: separate out the driver patches, add WARN for getting
MULTHOP in paths we shouldn't (Daniel)
v3: use memset (Christian)
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Nhristian König <christian.koenig@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201109005432.861936-2-airlied@gmail.com

This patch replaces the vmap/vunmap's use of raw pointers in GEM object
functions with instances of struct dma_buf_map. GEM backends are
converted as well. For most of them, this simply changes the returned type.

TTM-based drivers now return information about the location of the memory,
either system or I/O memory. GEM VRAM helpers and qxl now use ttm_bo_vmap()
et al. Amdgpu, nouveau and radeon use drm_gem_ttm_vmap() et al instead of
implementing their own vmap callbacks.

v7:
	* init QXL cursor to mapped BO buffer (kernel test robot)
v5:
	* update vkms after switch to shmem
v4:
	* use ttm_bo_vmap(), drm_gem_ttm_vmap(), et al. (Daniel, Christian)
	* fix a trailing { in drm_gem_vmap()
	* remove several empty functions instead of converting them (Daniel)
	* comment uses of raw pointers with a TODO (Daniel)
	* TODO list: convert more helpers to use struct dma_buf_map
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NChristian König <christian.koenig@amd.com>
Tested-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103093015.1063-7-tzimmermann@suse.de

The parameters map and is_iomem are always of the same value. Removed them
to prepares the function for conversion to struct dma_buf_map.

v4:
	* don't check for !kmap->virtual; will always be false
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Tested-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103093015.1063-2-tzimmermann@suse.de

Not needed as far as I can see.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Reviewed-by: NMadhav Chauhan <madhav.chauhan@amd.com>
Tested-by: NHuang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/397085/?series=83051&rev=1

Provide the necessary parameters by all drivers and use the new pool alloc
when no driver specific function is provided.

v2: fix the GEM VRAM helpers
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Reviewed-by: NMadhav Chauhan <madhav.chauhan@amd.com>
Tested-by: NHuang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/397081/?series=83051&rev=1

The move notify callback is only used in one place, this should
be removed in the future, but for now just rename it to the use
case which is to notify the driver that the GPU memory is to be
deleted.

Drivers can be cleaned up after this separately.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201021044031.1752624-2-airlied@gmail.com

The drivers now do this in the move callback.

move_notify is still needed in the destroy path.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201020010319.1692445-7-airlied@gmail.com

Changing the caching on the fly never really worked
flawlessly.

So stop this completely and just let drivers specific the
desired caching in the tt or bus object.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patchwork.freedesktop.org/patch/394256/

And implement setting it up correctly in the drivers.

This allows getting rid of the placement flags for this.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patchwork.freedesktop.org/patch/394254/

All drivers can determine the tt caching state at creation time,
no need to do this on the fly during every validation.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patchwork.freedesktop.org/patch/394253/

This will always do memcpy moves.
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201006000644.1005758-5-airlied@gmail.com

Most drivers that use VRAM helpers have only a few MiB of framebuffer
memory available. To reduce fragmentation, new BOs are now put into
system memory by default. Only pin operations are allowed to move BOs
into VRAM.

v2:
	* rebased onto latest drm-tip
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200922145700.25413-4-tzimmermann@suse.de

Don't override the GEM object functions unconditionally. If the driver
sets the GEM functions, VRAM helpers will not set them. The idea has been
taken from SHMEM helpers.

v2:
	* updated the commit message (Sam)
	* document the new feature for drm_gem_vram_create()
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200922145700.25413-3-tzimmermann@suse.de

The drm_gem_vram_create() function is the only caller of the internal
helper drm_gem_vram_init(). Streamline the code by putting all code into
the create function.

v2:
	* rebased onto latest drm-tip
	* fixed typo in commit message (Sam)
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200922145700.25413-2-tzimmermann@suse.de

Stop using TTM_PL_FLAG_NO_EVICT.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/391603/?series=81973&rev=1

Commit 7053e0ea ("drm/vram-helper: stop using TTM placement flags")
cleared the BO placement flags if top-down placement had been selected.
Hence, BOs that were supposed to go into VRAM are now placed in a default
location in system memory.

Trying to scanout the incorrectly pinned BO results in displayed garbage
and an error message.

[  146.108127] ------------[ cut here ]------------
[  146.1V08180] WARNING: CPU: 0 PID: 152 at drivers/gpu/drm/drm_gem_vram_helper.c:284 drm_gem_vram_offset+0x59/0x60 [drm_vram_helper]
...
[  146.108591]  ast_cursor_page_flip+0x3e/0x150 [ast]
[  146.108622]  ast_cursor_plane_helper_atomic_update+0x8a/0xc0 [ast]
[  146.108654]  drm_atomic_helper_commit_planes+0x197/0x4c0
[  146.108699]  drm_atomic_helper_commit_tail_rpm+0x59/0xa0
[  146.108718]  commit_tail+0x103/0x1c0
...
[  146.109302] ---[ end trace d901a1ba1d949036 ]---

Fix the bug by keeping the placement flags. The top-down placement flag
is stored in a separate variable.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Fixes: 7053e0ea ("drm/vram-helper: stop using TTM placement flags")
Cc: Christian König <christian.koenig@amd.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200921142536.4392-1-tzimmermann@suse.de

Call the driver first and have it call the common code cleanup.

This is useful later to fix unbind.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200917043040.146575-3-airlied@gmail.com

Instead of letting TTM make an educated guess based on
some mask all drivers should just specify what caching
they want for their CPU mappings.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/390207/

As far as I can tell this was never used either and we just
always fallback to the order cached > wc > uncached anyway.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/390142/

I got a use-after-free report when doing some fuzz test:

If ttm_bo_init() fails, the "gbo" and "gbo->bo.base" will be
freed by ttm_buffer_object_destroy() in ttm_bo_init(). But
then drm_gem_vram_create() and drm_gem_vram_init() will free
"gbo" and "gbo->bo.base" again.

BUG: KMSAN: use-after-free in drm_vma_offset_remove+0xb3/0x150
CPU: 0 PID: 24282 Comm: syz-executor.1 Tainted: G    B   W         5.7.0-rc4-msan #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
Call Trace:
 __dump_stack
 dump_stack+0x1c9/0x220
 kmsan_report+0xf7/0x1e0
 __msan_warning+0x58/0xa0
 drm_vma_offset_remove+0xb3/0x150
 drm_gem_free_mmap_offset
 drm_gem_object_release+0x159/0x180
 drm_gem_vram_init
 drm_gem_vram_create+0x7c5/0x990
 drm_gem_vram_fill_create_dumb
 drm_gem_vram_driver_dumb_create+0x238/0x590
 drm_mode_create_dumb
 drm_mode_create_dumb_ioctl+0x41d/0x450
 drm_ioctl_kernel+0x5a4/0x710
 drm_ioctl+0xc6f/0x1240
 vfs_ioctl
 ksys_ioctl
 __do_sys_ioctl
 __se_sys_ioctl+0x2e9/0x410
 __x64_sys_ioctl+0x4a/0x70
 do_syscall_64+0xb8/0x160
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4689b9
Code: fd e0 fa ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb e0 fa ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f368fa4dc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000076bf00 RCX: 00000000004689b9
RDX: 0000000020000240 RSI: 00000000c02064b2 RDI: 0000000000000003
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000004d17e0 R14: 00007f368fa4e6d4 R15: 000000000076bf0c

Uninit was created at:
 kmsan_save_stack_with_flags
 kmsan_internal_poison_shadow+0x66/0xd0
 kmsan_slab_free+0x6e/0xb0
 slab_free_freelist_hook
 slab_free
 kfree+0x571/0x30a0
 drm_gem_vram_destroy
 ttm_buffer_object_destroy+0xc8/0x130
 ttm_bo_release
 kref_put
 ttm_bo_put+0x117d/0x23e0
 ttm_bo_init_reserved+0x11c0/0x11d0
 ttm_bo_init+0x289/0x3f0
 drm_gem_vram_init
 drm_gem_vram_create+0x775/0x990
 drm_gem_vram_fill_create_dumb
 drm_gem_vram_driver_dumb_create+0x238/0x590
 drm_mode_create_dumb
 drm_mode_create_dumb_ioctl+0x41d/0x450
 drm_ioctl_kernel+0x5a4/0x710
 drm_ioctl+0xc6f/0x1240
 vfs_ioctl
 ksys_ioctl
 __do_sys_ioctl
 __se_sys_ioctl+0x2e9/0x410
 __x64_sys_ioctl+0x4a/0x70
 do_syscall_64+0xb8/0x160
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

If ttm_bo_init() fails, the "gbo" will be freed by
ttm_buffer_object_destroy() in ttm_bo_init(). But then
drm_gem_vram_create() and drm_gem_vram_init() will free
"gbo" again.
Reported-by: NHulk Robot <hulkci@huawei.com>
Reported-by: Nbutt3rflyh4ck <butterflyhuangxx@gmail.com>
Signed-off-by: NJia Yang <jiayang5@huawei.com>
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200714083238.28479-2-tzimmermann@suse.de

VRAM helpers support ref counting for pin and vmap operations, no need
to avoid these operations by employing the internal kmap interface. Just
use drm_gem_vram_vmap() and let it handle the details.

Also unexport the kmap interfaces from VRAM helpers. Vboxvideo was the
last user of these internal functions.

v2:
	* fixed a comma in commit description
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: NHans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200911075922.19317-1-tzimmermann@suse.de

It's not supported to specify more than one of those flags.
So it never made sense to make this a flag in the first place.

Nuke the flags and specify directly which memory type to use.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389826/?series=81551&rev=1

Those are going to be removed, stop using them here.

Instead define separate flags for the helper.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389823/?series=81551&rev=1

Acked-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200907204630.1406528-10-airlied@gmail.com

This is used by TTM to communicate the physical address
which should be used with ioremap(), ioremap_wc(). We don't
need to separate the base and offset in any way here.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389457/

I want to split this structure up and use it differently,
step one remove bdev pointer from it and pass it explicitly.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826014428.828392-4-airlied@gmail.com

The drivers all do the same thing here.

Reviewed-by: Christian König <christian.koenig@amd.com> for both.
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811074658.58309-1-airlied@gmail.com

This name better reflects what the object does. I didn't rename
all the pointers it seemed too messy.
Signed-off-by: NDave Airlie <airlied@redhat.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-60-airlied@gmail.com

This name makes a lot more sense, since these are about managing
driver resources rather than just memory ranges.
Acked-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-59-airlied@gmail.com

This makes it easier to move these to a driver allocated system
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-47-airlied@gmail.com

Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-39-airlied@gmail.com

Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-30-airlied@gmail.com

Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-19-airlied@gmail.com

This code was assuming there was a drm_mm here, don't do
that call the correct API.

v2: use the new exported interface.
Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-13-airlied@gmail.com

The default path for populate/unpopulate is already this.
Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-8-airlied@gmail.com

It is a very strange concept to call a function which just
calls back the caller for the functions parameters.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/382085/

Instead just initialize the memory type parameters
before calling ttm_bo_init_mm.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/382086/