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1331 Commits

Author SHA1 Message Date
Dave Airlie
7626168fd1 drm/ttm: flip tt destroy ordering. 
Call the driver first and have it call the common code cleanup.

This is useful later to fix unbind.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200917043040.146575-3-airlied@gmail.com
 2020-09-18 06:14:41 +10:00
Dave Airlie
0b988ca1c7 drm/ttm: protect against reentrant bind in the drivers 
This moves the generic tracking into the drivers and protects
against reentrancy in the drivers. It fixes up radeon and agp
to be able to query the bound status as that is required.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200917043040.146575-2-airlied@gmail.com
 2020-09-18 06:14:00 +10:00
Dave Airlie
b40be05ed2 Merge branch 'for-5.10-drm-sg-fix' of https://github.com/mszyprow/linux into drm-next 
Please pull a set of fixes for various DRM drivers that finally resolve
incorrect usage of the scatterlists (struct sg_table nents and orig_nents
entries), what causes issues when IOMMU is used.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200910080505.24456-1-m.szyprowski@samsung.com
 2020-09-17 16:07:11 +10:00
Dave Airlie
7eec915138 drm/ttm/tt: add wrappers to set tt state. 
This adds 2 getters and 4 setters, however unbound and populated
are currently the same thing, this will change, it also drops
a BUG_ON that seems not that useful.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200915024007.67163-2-airlied@gmail.com
 2020-09-16 09:33:24 +10:00
Christian König
9c3006a4cc drm/ttm: remove available_caching 
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: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/390207/
 2020-09-15 16:05:19 +02:00
Christian König
0fe438cec9 drm/ttm: remove default caching 
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: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/390142/
 2020-09-15 16:03:44 +02:00
Christian König
48e07c23cb drm/ttm: nuke memory type flags 
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: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389826/?series=81551&rev=1
 2020-09-11 13:31:23 +02:00
Christian König
e03d342c62 drm/vmwgfx: stop setting multiple domain flags 
Setting more than one placement flag is illegal.
Fix this by using the current flags.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389824/?series=81551&rev=1
 2020-09-11 13:31:23 +02:00
Julien Thierry
00089c048e objtool: Rename frame.h -> objtool.h 
Header frame.h is getting more code annotations to help objtool analyze
object files.

Rename the file to objtool.h.

[ jpoimboe: add objtool.h to MAINTAINERS ]

Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
 2020-09-10 10:43:13 -05:00
Marek Szyprowski
c915c2cbaf drm: vmwgfx: fix common struct sg_table related issues 
The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function
returns the number of the created entries in the DMA address space.
However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and
dma_unmap_sg must be called with the original number of the entries
passed to the dma_map_sg().

struct sg_table is a common structure used for describing a non-contiguous
memory buffer, used commonly in the DRM and graphics subsystems. It
consists of a scatterlist with memory pages and DMA addresses (sgl entry),
as well as the number of scatterlist entries: CPU pages (orig_nents entry)
and DMA mapped pages (nents entry).

It turned out that it was a common mistake to misuse nents and orig_nents
entries, calling DMA-mapping functions with a wrong number of entries or
ignoring the number of mapped entries returned by the dma_map_sg()
function.

To avoid such issues, lets use a common dma-mapping wrappers operating
directly on the struct sg_table objects and use scatterlist page
iterators where possible. This, almost always, hides references to the
nents and orig_nents entries, making the code robust, easier to follow
and copy/paste safe.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Roland Scheidegger <sroland@vmware.com>
 2020-09-10 08:18:35 +02:00
Dave Airlie
debf8ab9f8 drm/vmwgfx: move to driver binding functions 
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200907204630.1406528-8-airlied@gmail.com
 2020-09-09 08:30:16 +10:00
Christian König
54d04ea8cd drm/ttm: merge offset and base in ttm_bus_placement 
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: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389457/
 2020-09-08 10:43:30 +02:00
Dave Airlie
0a667b5007 drm/ttm: remove bdev from ttm_tt 
I want to split this structure up and use it differently,
step one remove bdev pointer from it and pass it explicitly.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826014428.828392-4-airlied@gmail.com
 2020-09-08 06:39:21 +10:00
Dave Airlie
098754fe3c drm/ttm: init mem->bus in common code. 
The drivers all do the same thing here.

Reviewed-by: Christian König <christian.koenig@amd.com> for both.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811074658.58309-1-airlied@gmail.com
 2020-08-24 17:00:48 +10:00
Thomas Zimmermann
534b1f9071 Merge drm/drm-next into drm-misc-next 
Backmerging drm-next into drm-misc-next for nouveau and panel updates.
Resolves a conflict between ttm and nouveau, where struct ttm_mem_res got
renamed to struct ttm_resource.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
 2020-08-12 20:42:08 +02:00
Christian König
e92ae67d6e drm/ttm: rename ttm_resource_manager_func callbacks 
The names get/put are associated with reference counting
in the Linux kernel, use alloc/free instead.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/384340/?series=80346&rev=1
 2020-08-12 15:50:51 +02:00
Dave Airlie
a343160235 drm/vmwgfx/ttm: fix the non-THP cleanup path. 
I fixed the init path, but missed the cleanup path.

Fixes: e0830704de ("drm/vmwgfx: takedown vram manager")
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200810054110.4192239-1-airlied@gmail.com
 2020-08-11 11:27:25 +10:00
Colin Ian King
e97644ebcd drm/vmwgfx: fix spelling mistake "Cant" -> "Can't" 
There is a spelling mistake in a DRM_ERROR message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:03 +02:00
Colin Ian King
1ae96fce3e drm/vmwgfx: fix spelling mistake "Cound" -> "Could" 
There is a spelling mistake in a DRM_ERROR message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:03 +02:00
Roland Scheidegger
981243371a drm/vmwgfx/ldu: Use drm_mode_config_reset 
Same problem as in stdu, same fix.

Fixes: 51f644b40b ("drm/atomic-helper: reset vblank on crtc reset")
Acked-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:03 +02:00
Roland Scheidegger
1338441cf1 drm/vmwgfx/sou: Use drm_mode_config_reset 
Same problem as in stdu, same fix.

Fixes: 51f644b40b ("drm/atomic-helper: reset vblank on crtc reset")
Acked-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:02 +02:00
Daniel Vetter
68745d1edf drm/vmwgfx/stdu: Use drm_mode_config_reset 
When converting to atomic the state reset was done by directly calling
the functions, and before the modeset object was fully initialized.
This means the various ->dev pointers weren't set up.

After

commit 51f644b40b
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jun 12 18:00:49 2020 +0200

    drm/atomic-helper: reset vblank on crtc reset

this started to oops because now we're trying to derefence
drm_crtc->dev. Fix this up by entirely switching over to
drm_mode_config_reset, called once everything is set up.

Fixes: 51f644b40b ("drm/atomic-helper: reset vblank on crtc reset")
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Tested-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:02 +02:00
Dan Carpenter
4437c1152c drm/vmwgfx: Fix two list_for_each loop exit tests 
These if statements are supposed to be true if we ended the
list_for_each_entry() loops without hitting a break statement but they
don't work.

In the first loop, we increment "i" after the "if (i == unit)" condition
so we don't necessarily know that "i" is not equal to unit at the end of
the loop.

In the second loop we exit when mode is not pointing to a valid
drm_display_mode struct so it doesn't make sense to check "mode->type".

Fixes: a278724aa2 ("drm/vmwgfx: Implement fbdev on kms v2")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:02 +02:00
Dan Carpenter
1d2c0c565b drm/vmwgfx: Use correct vmw_legacy_display_unit pointer 
The "entry" pointer is an offset from the list head and it doesn't
point to a valid vmw_legacy_display_unit struct.  Presumably the
intent was to point to the last entry.

Also the "i++" wasn't used so I have removed that as well.

Fixes: d7e1958dbe ("drm/vmwgfx: Support older hardware.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:02 +02:00
Gustavo A. R. Silva
4f88b4ccb7 drm/vmwgfx: Use struct_size() helper 
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
 2020-08-11 03:16:02 +02:00
Dave Airlie
2966141ad2 drm/ttm: rename ttm_mem_reg to ttm_resource. 
This name better reflects what the object does. I didn't rename
all the pointers it seemed too messy.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-60-airlied@gmail.com
 2020-08-06 13:19:21 +10:00
Dave Airlie
9de59bc201 drm/ttm: rename ttm_mem_type_manager -> ttm_resource_manager. 
This name makes a lot more sense, since these are about managing
driver resources rather than just memory ranges.

Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-59-airlied@gmail.com
 2020-08-06 13:12:40 +10:00
Dave Airlie
3f48f938ad drm/ttm: add a wrapper for checking if manager is in use 
This converts vmwgfx over to using an interface to set the
in use and check the in use flag.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-57-airlied@gmail.com
 2020-08-06 13:12:40 +10:00
Dave Airlie
90a0489a71 drm/ttm: drop type manager has_type 
under driver control, this flag isn't needed anymore,
remove the API that used to access it, and consoldiate
with the used api.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-56-airlied@gmail.com
 2020-08-06 13:12:40 +10:00
Dave Airlie
7541ce1a6f drm/ttm: drop man->bdev link. 
This link isn't needed anymore, drop it from the init interface.

Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-54-airlied@gmail.com
 2020-08-06 13:12:40 +10:00
Dave Airlie
9488e46a4f drm/vmwgfx/gmrid: convert to driver controlled allocation. 
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-50-airlied@gmail.com
 2020-08-06 13:12:39 +10:00
Dave Airlie
d575a891e6 drm/vmwgfx/ttm: move thp to driver managed 
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-49-airlied@gmail.com
 2020-08-06 13:12:39 +10:00
Dave Airlie
37205891d8 drm/ttm: make ttm_range_man_init/takedown take type + args 
This makes it easier to move these to a driver allocated system

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-47-airlied@gmail.com
 2020-08-06 13:12:39 +10:00
Dave Airlie
089cafc198 drm/vmwgfx/ttm: use wrapper to access memory manager 
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-43-airlied@gmail.com
 2020-08-06 13:12:21 +10:00
Dave Airlie
6eee6675e0 drm/vmwgfx: fix gmrid takedown paths to new interface 
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-34-airlied@gmail.com
 2020-08-06 12:32:03 +10:00
Dave Airlie
e0830704de drm/vmwgfx: takedown vram manager 
Don't bother returning EBUSY, nobody cares enough,
if the driver has a problem, it should deal with it.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-29-airlied@gmail.com
 2020-08-06 12:32:03 +10:00
Dave Airlie
621617780a drm/vmwgfx/ttm: switch gmrid allocator to new init paths. 
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-22-airlied@gmail.com
 2020-08-06 12:31:37 +10:00
Dave Airlie
252f8d7b91 drm/vmwgfx/ttm: convert vram mm init to new code paths 
Split out the vram thp init path vs the range manager init.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-21-airlied@gmail.com
 2020-08-06 12:31:36 +10:00
Dave Airlie
a0bb77cb77 drm/vmwgfx/gmrid: don't provide pointless ttm debug callback 
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-11-airlied@gmail.com
 2020-08-06 12:16:45 +10:00
Dave Airlie
a2d6ddc417 drm/vmwgfx: drop bo map/unmap dma functions. 
The map one was used once, just inline it, and drop them both.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-3-airlied@gmail.com
 2020-08-06 12:16:25 +10:00
Dave Airlie
56dc01f18d drm/vmwgfx: consolidate ttm object creation and populate 
These two functions has the same code in them, create a common
helper function instead.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-2-airlied@gmail.com
 2020-08-06 12:16:22 +10:00
Christian König
1a3fb59085 drm/ttm: remove the init_mem_type callback 
It is a very strange concept to call a function which just
calls back the caller for the functions parameters.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/382085/
 2020-07-31 17:14:37 +02:00
Christian König
3629ca5dfb drm/vmwgfx: stop implementing init_mem_type v2 
Instead just initialize the memory type parameters
before calling ttm_bo_init_mm.

v2: keep extra system domain handling

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/382082/
 2020-07-31 17:13:46 +02:00
Christian König
be1213a341 drm/ttm: remove TTM_MEMTYPE_FLAG_FIXED v2 
Instead use a boolean field in the memory manager structure.

Also invert the meaning of the field since the use of a TT
structure is the special case here.

v2: cleanup zero init.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/382079/
 2020-07-31 17:13:09 +02:00
Christian König
418d2ad1ac drm/ttm: initialize the system domain with defaults v2 
Instead of repeating that in each driver.

v2: keep the caching limitation for VMWGFX for now.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/382078/
 2020-07-31 17:12:51 +02:00
Dave Airlie
ec731e516a drm/ttm: ttm_bo_swapout_all doesn't use it's argument. 
Just drop the argument from this.

This does ask the question if this is the function vmwgfx
should be using or should it be doing an evict all like
the other drivers.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200728034254.20114-1-airlied@gmail.com
 2020-07-29 10:01:23 +10:00
Dave Airlie
08bb88cfc4 drm/ttm: make ttm_tt unbind function return void. 
The return value just led to BUG_ON, I think if a driver wants
to BUG_ON here it can do it itself. (don't BUG_ON).

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200728040003.20398-1-airlied@gmail.com
 2020-07-29 09:43:06 +10:00
Dave Airlie
41206a073c Merge v5.8-rc6 into drm-next 
I've got a silent conflict + two trees based on fixes to merge.

Fixes a silent merge with amdgpu

Signed-off-by: Dave Airlie <airlied@redhat.com>
 2020-07-24 08:48:05 +10:00
Christian König
cd1d58edcd drm/vmwgfx: stop using TTM_MEMTYPE_FLAG_MAPPABLE 
The driver doesn't expose any not-mapable memory resources.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/378241/
 2020-07-21 16:33:20 +02:00
Christian König
f5a9a9383f drm/ttm: remove TTM_MEMTYPE_FLAG_CMA 
The original intention was to avoid CPU page table unmaps
when BOs move between the GTT and SYSTEM domain.

The problem is that this never correctly handled changes
in the caching attributes or backing pages.

Just drop this for now and simply unmap the CPU page
tables in all cases.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/378240/
 2020-07-21 16:21:43 +02:00