kernel/linux.git/drivers/gpu/drm/xe/xe_migrate.c, branch linux-7.0.y

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm/xe: Fix kerneldoc for xe_migrate_exec_queue

2026-02-05T13:03:41+00:00

Correct the function name in the kerneldoc. It is for below warning: "Warning: drivers/gpu/drm/xe/xe_migrate.c:1262 expecting prototype for xe_get_migrate_exec_queue(). Prototype was for xe_migrate_exec_queue() instead" Fixes: 916ee4704a865 ("drm/xe/vf: Register CCS read/write contexts with Guc") Reviewed-by: Michal Wajdeczko Signed-off-by: Shuicheng Lin Signed-off-by: Michal Wajdeczko Link: https://patch.msgid.link/20260129233834.419977-6-shuicheng.lin@intel.com (cherry picked from commit 9fd8da717934f05125b9ba6782622c459a368dc0) Signed-off-by: Rodrigo Vivi

BackMerge tag 'v6.19-rc7' into drm-next

2026-01-28T02:44:28+00:00

Linux 6.19-rc7 This is needed for msm and rust trees. Signed-off-by: Dave Airlie

drm/xe/migrate: fix job lock assert

2026-01-21T14:24:22+00:00

We are meant to be checking the user vm for the bind queue, but actually we are checking the migrate vm. For various reasons this is not currently firing but this will likely change in the future. Now that we have the user_vm attached to the bind queue, we can fix this by directly checking that here. Fixes: dba89840a920 ("drm/xe: Add GT TLB invalidation jobs") Signed-off-by: Matthew Auld Cc: Thomas Hellström Cc: Matthew Brost Reviewed-by: Matthew Brost Reviewed-by: Arvind Yadav Link: https://patch.msgid.link/20260120110609.77958-4-matthew.auld@intel.com (cherry picked from commit 9dd1048bca4fe2aa67c7a286bafb3947537adedb) Signed-off-by: Thomas Hellström

drm/xe/migrate: Configure migration queue as low latency

2025-12-23T15:03:48+00:00

Commit 5488bec96bcc ("drm/xe/uapi: Use hint for guc to set GT frequency") introduced low latency hint for use by user space when creating an exec queue. This instructs SLPC to ramp the GT frequency aggressively. SVM relies on an internal exec queue to migrate memory upon page faults. This change creates this exec queue with the low latency hint to speed up migration. This should not impact systems where GT frequency is set over sysfs, or with long running workloads which give enough time for the frequency to ramp up. An example of memory access pattern that shows an improvement of SVM performance is running hundreds of times IGT eu-fault-2m-once-device in xe_exec_system_allocator. The copy duration provided by GT stats in svm_2M_device_copy_us shows per GPU page fault: ~ 165 μs without low latency hint ~ 130 μs with low latency hint Suggested-by: Matthew Brost Cc: Rodrigo Vivi Reviewed-by: Rodrigo Vivi Signed-off-by: Francois Dugast Link: https://patch.msgid.link/20251223115327.49555-1-francois.dugast@intel.com Signed-off-by: Rodrigo Vivi

drm/pagemap, drm/xe: Ensure that the devmem allocation is idle before use

2025-12-23T09:11:59+00:00

In situations where no system memory is migrated to devmem, and in upcoming patches where another GPU is performing the migration to the newly allocated devmem buffer, there is nothing to ensure any ongoing clear to the devmem allocation or async eviction from the devmem allocation is complete. Address that by passing a struct dma_fence down to the copy functions, and ensure it is waited for before migration is marked complete. v3: - New patch. v4: - Update the logic used for determining when to wait for the pre_migrate_fence. - Update the logic used for determining when to warn for the pre_migrate_fence since the scheduler fences apparently can signal out-of-order. v5: - Fix a UAF (CI) - Remove references to source P2P migration (Himal) - Put the pre_migrate_fence after migration. v6: - Pipeline the pre_migrate_fence dependency (Matt Brost) Fixes: c5b3eb5a906c ("drm/xe: Add GPUSVM device memory copy vfunc functions") Cc: Matthew Brost Cc: # v6.15+ Signed-off-by: Thomas Hellström Reviewed-by: Matthew Brost Acked-by: Maarten Lankhorst # For merging through drm-xe. Link: https://patch.msgid.link/20251219113320.183860-4-thomas.hellstrom@linux.intel.com (cherry picked from commit 16b5ad31952476fb925c401897fc171cd37f536b) Signed-off-by: Thomas Hellström

drm/pagemap, drm/xe: Support destination migration over interconnect

2025-12-23T09:00:49+00:00

Support destination migration over interconnect when migrating from device-private pages with the same dev_pagemap owner. Since we now also collect device-private pages to migrate, also abort migration if the range to migrate is already fully populated with pages from the desired pagemap. Finally return -EBUSY from drm_pagemap_populate_mm() if the migration can't be completed without first migrating all pages in the range to system. It is expected that the caller will perform that before retrying the call to drm_pagemap_populate_mm(). v3: - Fix a bug where the p2p dma-address was never used. - Postpone enabling destination interconnect migration, since xe devices require source interconnect migration to ensure the source L2 cache is flushed at migration time. - Update the drm_pagemap_migrate_to_devmem() interface to pass migration details. v4: - Define XE_INTERCONNECT_P2P unconditionally (CI) - Include a missing header (CI) v5: - Use page order increments where possible (Matt Brost). - Fix a negated value of can_migrate_same_pagemap. - Move removal of some dead code to a separate patch (Matt Brost). - Remove an unnecessary zdd get() and put() (Matt Brost). Signed-off-by: Thomas Hellström Reviewed-by: Matthew Brost Acked-by: Maarten Lankhorst # For merging through drm-xe. Link: https://patch.msgid.link/20251219113320.183860-23-thomas.hellstrom@linux.intel.com

drm/pagemap, drm/xe: Ensure that the devmem allocation is idle before use

2025-12-23T08:35:11+00:00

drm/xe/vf: Shadow buffer management for CCS read/write operations

2025-11-19T05:45:08+00:00

CCS copy command consist of 5-dword sequence. If vCPU halts during save/restore operations while these sequences are being programmed, incomplete writes can cause page faults during IGPU CCS metadata saving. Use shadow buffer management to prevent partial write issues during CCS operations. Signed-off-by: Satyanarayana K V P Suggested-by: Matthew Brost Cc: Michal Wajdeczko Cc: Matthew Auld Reviewed-by: Matthew Brost Signed-off-by: Matthew Brost Link: https://patch.msgid.link/20251118120745.3460172-3-satyanarayana.k.v.p@intel.com