drm/amdgpu: report the BO alignment in bytes in GEM_LIST_HANDLES

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The uapi documents drm_amdgpu_gem_list_handles_entry.alignment as
"physical start_addr alignment in bytes", and GEM_OP
GET_GEM_CREATE_INFO returns the same value in bytes, but
GEM_LIST_HANDLES returns tbo.page_alignment, which is in pages. For a BO
created with a 64 KiB alignment on navi31:

  GET_GEM_CREATE_INFO: alignment=65536
  GEM_LIST_HANDLES:    alignment=16

so a user such as CRIU that recreates BOs from this list uses the wrong
alignment. Convert it to bytes.

Fixes: f9db1fc52c ("drm/amdgpu: Add ioctl to get all gem handles for a process")
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit aa4493ae949c13e79aba0731394dd7a7e431342b)
Cc: stable@vger.kernel.org

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Jesse Zhang 2026-10-12 09:28:33 +08:00 • committed by Alex Deucher

parent 1b4da805a0

commit d65a459dbc

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

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