diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-01-18 15:20:03 +0300 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-01-28 16:24:52 +0300 |
| commit | 96e8f153964aa0cc0ebb21576974a723f2b03cd5 (patch) | |
| tree | 99c96aca85a3bd187f3a77a0bd16ccbc67386526 /drivers/gpu/drm/qxl/qxl_drv.h | |
| parent | 3ebe3ddf37c84acfb1dfbe471482cb4bbdb0f7c0 (diff) | |
| download | linux-96e8f153964aa0cc0ebb21576974a723f2b03cd5.tar.xz | |
drm/qxl: use separate offset spaces for the two slots / ttm memory types.
Without that ttm offsets are not unique, they can refer to objects
in both VRAM and PRIV memory (aka main and surfaces slot).
One of those "why things didn't blow up without this" moments.
Probably offset conflicts are rare enough by pure luck.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190118122020.27596-7-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_drv.h')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_drv.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h index 3ebe66abf259..27e0a3fc08e6 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.h +++ b/drivers/gpu/drm/qxl/qxl_drv.h @@ -136,6 +136,7 @@ struct qxl_memslot { uint64_t start_phys_addr; uint64_t size; uint64_t high_bits; + uint64_t gpu_offset; }; enum { @@ -312,8 +313,10 @@ qxl_bo_physical_address(struct qxl_device *qdev, struct qxl_bo *bo, (bo->tbo.mem.mem_type == TTM_PL_VRAM) ? &qdev->main_slot : &qdev->surfaces_slot; + WARN_ON_ONCE((bo->tbo.offset & slot->gpu_offset) != slot->gpu_offset); + /* TODO - need to hold one of the locks to read tbo.offset */ - return slot->high_bits | (bo->tbo.offset + offset); + return slot->high_bits | (bo->tbo.offset - slot->gpu_offset + offset); } /* qxl_fb.c */ |