kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.h, branch v6.19.12Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.122025-10-13T18:14:36+00:00drm/amdgpu: update the functions to use amdgpu version of hmm2025-10-13T18:14:36+00:00Sunil Khatrisunil.khatri@amd.com2025-10-10T12:39:57+00:00urn:sha1:737da5363cc07c96d59f2ebaf9f9f87235becf1d
At times we need a bo reference for hmm and for that add
a new struct amdgpu_hmm_range which will hold an optional
bo member and hmm_range.
Use amdgpu_hmm_range instead of hmm_range and let the bo
as an optional argument for the caller if they want to
the bo reference to be taken or they want to handle that
explicitly.
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: clean up amdgpu hmm range functions2025-10-13T18:14:28+00:00Sunil Khatrisunil.khatri@amd.com2025-09-30T08:15:11+00:00urn:sha1:b1dd0db1c668a33112bfb26618c090163700e368
Clean up the amdgpu hmm range functions for clearer
definition of each.
a. Split amdgpu_ttm_tt_get_user_pages_done into two:
1. amdgpu_hmm_range_valid: To check if the user pages
are valid and update seq num
2. amdgpu_hmm_range_free: Clean up the hmm range
and pfn memory.
b. amdgpu_ttm_tt_get_user_pages_done and
amdgpu_ttm_tt_discard_user_pages are similar function so remove
discard and directly use amdgpu_hmm_range_free to clean up the
hmm range and pfn memory.
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: use user provided hmm_range buffer in amdgpu_ttm_tt_get_user_pages2025-10-13T18:14:28+00:00Sunil Khatrisunil.khatri@amd.com2025-09-24T06:53:26+00:00urn:sha1:e095b55155ef69a8ae0eb114a7fd2a381c012f33
update the amdgpu_ttm_tt_get_user_pages and all dependent function
along with it callers to use a user allocated hmm_range buffer instead
hmm layer allocates the buffer.
This is a need to get hmm_range pointers easily accessible
without accessing the bo and that is a requirement for the
userqueue to lock the userptrs effectively.
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: use hmm_pfns instead of array of pages2025-09-23T14:22:31+00:00Sunil Khatrisunil.khatri@amd.com2025-09-17T14:42:43+00:00urn:sha1:c5b3cc417b0260abc74ed32f6baa626c9de917c0
we dont need to allocate local array of pages to hold
the pages returned by the hmm, instead we could use
the hmm_range structure itself to get to hmm_pfn
and get the required pages directly.
This avoids call to alloc/free quite a lot.
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Add notifier lock for KFD userptrs2022-12-14T14:48:05+00:00Felix KuehlingFelix.Kuehling@amd.com2021-04-22T01:09:54+00:00urn:sha1:f95f51a4c3357eabf74fe14ab7daa5b5c0422b27
Add a per-process MMU notifier lock for processing notifiers from
userptrs. Use that lock to properly synchronize page table updates with
MMU notifiers.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Xiaogang Chen<Xiaogang.Chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: cleanup amdgpu_hmm_range_get_pages2022-11-17T05:23:43+00:00Christian Königchristian.koenig@amd.com2022-11-09T11:41:08+00:00urn:sha1:d4cbff464d2932a71d7d3b7d17ffef7700b58edd
Remove unused parameters and cleanup dead code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: rename the files for HMM handling2022-11-17T05:23:36+00:00Christian Königchristian.koenig@amd.com2022-11-09T11:28:46+00:00urn:sha1:d9483ecd327b7537c6a51cab515b5faad21b8200
Clean that up a bit, no functional change.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>