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| author | Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> | 2025-11-25 10:56:26 +0300 |
|---|---|---|
| committer | Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> | 2025-11-26 13:12:33 +0300 |
| commit | 0ae006dc48f3748fdee675052bc0e5e87b856ac2 (patch) | |
| tree | dd6cecdfee719a2d853a15c74fb92ccffb18c789 /drivers/gpu/drm | |
| parent | 4a938d3886d6dd29a54a2e6ebc03b6c2b7509ebf (diff) | |
| download | linux-0ae006dc48f3748fdee675052bc0e5e87b856ac2.tar.xz | |
drm/xe/svm: Extend MAP range to reduce vma fragmentation
When DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR is set during VM_BIND_OP_MAP,
the mapping logic now checks adjacent cpu_addr_mirror VMAs with default
attributes and expands the mapping range accordingly. This ensures that
bo_unmap operations ideally target the same area and helps reduce
fragmentation by coalescing nearby compatible VMAs into a single mapping.
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251125075628.1182481-4-himal.prasad.ghimiray@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_vm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index fc11a1a6f979..2681039f3221 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -2233,6 +2233,7 @@ vm_bind_ioctl_ops_create(struct xe_vm *vm, struct xe_vma_ops *vops, struct drm_gpuva_ops *ops; struct drm_gpuva_op *__op; struct drm_gpuvm_bo *vm_bo; + u64 range_start = addr; u64 range_end = addr + range; int err; @@ -2245,10 +2246,14 @@ vm_bind_ioctl_ops_create(struct xe_vm *vm, struct xe_vma_ops *vops, switch (operation) { case DRM_XE_VM_BIND_OP_MAP: + if (flags & DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR) + xe_vm_find_cpu_addr_mirror_vma_range(vm, &range_start, &range_end); + + fallthrough; case DRM_XE_VM_BIND_OP_MAP_USERPTR: { struct drm_gpuvm_map_req map_req = { - .map.va.addr = addr, - .map.va.range = range, + .map.va.addr = range_start, + .map.va.range = range_end - range_start, .map.gem.obj = obj, .map.gem.offset = bo_offset_or_userptr, }; |