From 6716a823d18d422c356c2cd0c087f46d84c9e713 Mon Sep 17 00:00:00 2001 From: Christian König Date: Fri, 6 Jun 2025 14:13:37 +0200 Subject: drm/amdgpu: rework how PTE flags are generated v3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Previously we tried to keep the HW specific PTE flags in each mapping, but for CRIU that isn't sufficient any more since the original value is needed for the checkpoint procedure. So rework the whole handling, nuke the early mapping function, keep the UAPI flags in each mapping instead of the HW flags and translate them to the HW flags while filling in the PTEs. Only tested on Navi 23 for now, so probably needs quite a bit of more work. v2: fix KFD and SVN handling v3: one more SVN fix pointed out by Felix v4: squash in gfx12 fix from David Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 260165bbe373..37d8a7034a7e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -494,7 +494,8 @@ static int vm_update_pds(struct amdgpu_vm *vm, struct amdgpu_sync *sync) return amdgpu_sync_fence(sync, vm->last_update, GFP_KERNEL); } -static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem) +static uint64_t get_pte_flags(struct amdgpu_device *adev, struct amdgpu_vm *vm, + struct kgd_mem *mem) { uint32_t mapping_flags = AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_MTYPE_DEFAULT; @@ -504,7 +505,7 @@ static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem) if (mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_EXECUTABLE) mapping_flags |= AMDGPU_VM_PAGE_EXECUTABLE; - return amdgpu_gem_va_map_flags(adev, mapping_flags); + return mapping_flags; } /** @@ -961,7 +962,7 @@ static int kfd_mem_attach(struct amdgpu_device *adev, struct kgd_mem *mem, goto unwind; } attachment[i]->va = va; - attachment[i]->pte_flags = get_pte_flags(adev, mem); + attachment[i]->pte_flags = get_pte_flags(adev, vm, mem); attachment[i]->adev = adev; list_add(&attachment[i]->list, &mem->attachments); -- cgit v1.2.3 From 859958a7faefe5b7742b7b8cdbc170713d4bf158 Mon Sep 17 00:00:00 2001 From: Heng Zhou Date: Wed, 13 Aug 2025 11:18:04 +0800 Subject: drm/amdgpu: fix nullptr err of vm_handle_moved If a amdgpu_bo_va is fpriv->prt_va, the bo of this one is always NULL. So, such kind of amdgpu_bo_va should be updated separately before amdgpu_vm_handle_moved. Signed-off-by: Heng Zhou Reviewed-by: Kasiviswanathan, Harish Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 37d8a7034a7e..d478acb4568a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -2970,9 +2970,22 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence __rcu * struct amdgpu_device *adev = amdgpu_ttm_adev( peer_vm->root.bo->tbo.bdev); + struct amdgpu_fpriv *fpriv = + container_of(peer_vm, struct amdgpu_fpriv, vm); + + ret = amdgpu_vm_bo_update(adev, fpriv->prt_va, false); + if (ret) { + dev_dbg(adev->dev, + "Memory eviction: handle PRT moved failed, pid %8d. Try again.\n", + pid_nr(process_info->pid)); + goto validate_map_fail; + } + ret = amdgpu_vm_handle_moved(adev, peer_vm, &exec.ticket); if (ret) { - pr_debug("Memory eviction: handle moved failed. Try again\n"); + dev_dbg(adev->dev, + "Memory eviction: handle moved failed, pid %8d. Try again.\n", + pid_nr(process_info->pid)); goto validate_map_fail; } } -- cgit v1.2.3