diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/5706-drm-amdgpu-Need-to-set-moved-to-true-when-evict-bo.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/5706-drm-amdgpu-Need-to-set-moved-to-true-when-evict-bo.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/5706-drm-amdgpu-Need-to-set-moved-to-true-when-evict-bo.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/5706-drm-amdgpu-Need-to-set-moved-to-true-when-evict-bo.patch new file mode 100644 index 00000000..d2a82f6b --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/5706-drm-amdgpu-Need-to-set-moved-to-true-when-evict-bo.patch @@ -0,0 +1,46 @@ +From 90189f809eba2f5a88ae234177a8f65320f12f26 Mon Sep 17 00:00:00 2001 +From: Chaudhary Amit Kumar <chaudharyamit.kumar@amd.com> +Date: Mon, 7 Jan 2019 16:31:53 +0530 +Subject: [PATCH 5706/5725] drm/amdgpu: Need to set moved to true when evict bo +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Fix the VMC page fault when the running sequence is as below: +1.amdgpu_gem_create_ioctl +2.ttm_bo_swapout->amdgpu_vm_bo_invalidate, as not called +amdgpu_vm_bo_base_init, so won't called +list_add_tail(&base->bo_list, &bo->va). Even the bo was evicted, +it won't set the bo_base->moved. +3.drm_gem_open_ioctl->amdgpu_vm_bo_base_init, here only called +list_move_tail(&base->vm_status, &vm->evicted), but not set the +bo_base->moved. +4.amdgpu_vm_bo_map->amdgpu_vm_bo_insert_map, as the bo_base->moved is +not set true, the function amdgpu_vm_bo_insert_map will call +list_move(&bo_va->base.vm_status, &vm->moved) +5.amdgpu_cs_ioctl won't validate the swapout bo, as it is only in the +moved list, not in the evict list. So VMC page fault occurs. + +Signed-off-by: Emily Deng <Emily.Deng@amd.com> +Reviewed-by: Christian König <christian.koenig@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +Signed-off-by: Chaudhary Amit Kumar <chaudharyamit.kumar@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +index 85d700b..50d5fa3 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +@@ -302,6 +302,7 @@ static void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base, + * is validated on next vm use to avoid fault. + * */ + amdgpu_vm_bo_evicted(base); ++ base->moved = true; + } + + /** +-- +2.7.4 + |