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amd/amdgpu: Inherit coherence flags base on original BO flags

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For SG BO to DMA-map userptrs on other GPUs, the SG BO
need inherit MTYPEs in PTEs from original BO.

If we set the flags, the device can be coherent with
the CPUs and other GPUs.

v2:
  1. Drop unnecessary flags check
  2. Remove local variable align

Signed-off-by: Shane Xiao <shane.xiao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Shane Xiao
2023-04-06 12:37:16 +08:00
committed by Alex Deucher
parent 89317d4255
commit af152c2120
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
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@@ -272,15 +272,19 @@ create_dmamap_sg_bo(struct amdgpu_device *adev,
struct kgd_mem *mem, struct amdgpu_bo **bo_out)
{
struct drm_gem_object *gem_obj;
int ret, align;
int ret;
uint64_t flags = 0;
ret = amdgpu_bo_reserve(mem->bo, false);
if (ret)
return ret;
align = 1;
ret = amdgpu_gem_object_create(adev, mem->bo->tbo.base.size, align,
AMDGPU_GEM_DOMAIN_CPU, AMDGPU_GEM_CREATE_PREEMPTIBLE,
if (mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR)
flags |= mem->bo->flags & (AMDGPU_GEM_CREATE_COHERENT |
AMDGPU_GEM_CREATE_UNCACHED);
ret = amdgpu_gem_object_create(adev, mem->bo->tbo.base.size, 1,
AMDGPU_GEM_DOMAIN_CPU, AMDGPU_GEM_CREATE_PREEMPTIBLE | flags,
ttm_bo_type_sg, mem->bo->tbo.base.resv, &gem_obj);
amdgpu_bo_unreserve(mem->bo);