From 0ae006dc48f3748fdee675052bc0e5e87b856ac2 Mon Sep 17 00:00:00 2001 From: Himal Prasad Ghimiray Date: Tue, 25 Nov 2025 13:26:26 +0530 Subject: [PATCH] drm/xe/svm: Extend MAP range to reduce vma fragmentation MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Thomas Hellström Reviewed-by: Matthew Brost Link: https://patch.msgid.link/20251125075628.1182481-4-himal.prasad.ghimiray@intel.com Signed-off-by: Himal Prasad Ghimiray --- drivers/gpu/drm/xe/xe_vm.c | 9 +++++++-- 1 file 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, }; -- 2.47.3