From: Christian König Date: Tue, 1 Sep 2015 13:33:25 +0000 (+0200) Subject: drm/amdgpu: use PT for VM sync on unmap X-Git-Tag: firefly_0821_release~176^2~1083^2~9^2~7 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a60c42320b375e80e52e7861acd6b81c61f05166;p=firefly-linux-kernel-4.4.55.git drm/amdgpu: use PT for VM sync on unmap Instead of the array which is used for ID management. Signed-off-by: Christian König Reviewed-by: Jammy Zhou Reviewed-by: Chunming Zhou --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 83b7ce6f5f72..5848564d3d66 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -627,9 +627,14 @@ static int amdgpu_vm_update_ptes(struct amdgpu_device *adev, { uint64_t mask = AMDGPU_VM_PTE_COUNT - 1; uint64_t last_pte = ~0, last_dst = ~0; + void *owner = AMDGPU_FENCE_OWNER_VM; unsigned count = 0; uint64_t addr; + /* sync to everything on unmapping */ + if (!(flags & AMDGPU_PTE_VALID)) + owner = AMDGPU_FENCE_OWNER_UNDEFINED; + /* walk over the address space and update the page tables */ for (addr = start; addr < end; ) { uint64_t pt_idx = addr >> amdgpu_vm_block_size; @@ -638,8 +643,7 @@ static int amdgpu_vm_update_ptes(struct amdgpu_device *adev, uint64_t pte; int r; - amdgpu_sync_resv(adev, &ib->sync, pt->tbo.resv, - AMDGPU_FENCE_OWNER_VM); + amdgpu_sync_resv(adev, &ib->sync, pt->tbo.resv, owner); r = reservation_object_reserve_shared(pt->tbo.resv); if (r) return r; @@ -790,17 +794,6 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, ib->length_dw = 0; - if (!(flags & AMDGPU_PTE_VALID)) { - unsigned i; - - for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { - struct amdgpu_fence *f = vm->ids[i].last_id_use; - r = amdgpu_sync_fence(adev, &ib->sync, &f->base); - if (r) - return r; - } - } - r = amdgpu_vm_update_ptes(adev, vm, ib, mapping->it.start, mapping->it.last + 1, addr + mapping->offset, flags, gtt_flags);