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| author | Matthew Auld <[email protected]> | 2025-07-31 09:38:10 +0000 |
|---|---|---|
| committer | Rodrigo Vivi <[email protected]> | 2025-08-12 16:52:26 +0000 |
| commit | 4126cb327a2e3273c81fcef1c594c5b7b645c44c (patch) | |
| tree | cfd2227a231d4f8cb7b541b8237574c36e6b0be1 /drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | |
| parent | drm/xe/migrate: prevent infinite recursion (diff) | |
| download | kernel-4126cb327a2e3273c81fcef1c594c5b7b645c44c.tar.gz kernel-4126cb327a2e3273c81fcef1c594c5b7b645c44c.zip | |
drm/xe/migrate: don't overflow max copy size
With non-page aligned copy, we need to use 4 byte aligned pitch, however
the size itself might still be close to our maximum of ~8M, and so the
dimensions of the copy can easily exceed the S16_MAX limit of the copy
command leading to the following assert:
xe 0000:03:00.0: [drm] Assertion `size / pitch <= ((s16)(((u16)~0U) >> 1))` failed!
platform: BATTLEMAGE subplatform: 1
graphics: Xe2_HPG 20.01 step A0
media: Xe2_HPM 13.01 step A1
tile: 0 VRAM 10.0 GiB
GT: 0 type 1
WARNING: CPU: 23 PID: 10605 at drivers/gpu/drm/xe/xe_migrate.c:673 emit_copy+0x4b5/0x4e0 [xe]
To fix this account for the pitch when calculating the number of current
bytes to copy.
Fixes: 270172f64b11 ("drm/xe: Update xe_ttm_access_memory to use GPU for non-visible access")
Signed-off-by: Matthew Auld <[email protected]>
Cc: Maciej Patelczyk <[email protected]>
Cc: Matthew Brost <[email protected]>
Reviewed-by: Stuart Summers <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
(cherry picked from commit 8c2d61e0e916e077fda7e7b8e67f25ffe0f361fc)
Signed-off-by: Rodrigo Vivi <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c')
0 files changed, 0 insertions, 0 deletions