diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1590-drm-amdgpu-Drop-last_vm_update-fence-after-KFD-VM-up.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1590-drm-amdgpu-Drop-last_vm_update-fence-after-KFD-VM-up.patch | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1590-drm-amdgpu-Drop-last_vm_update-fence-after-KFD-VM-up.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1590-drm-amdgpu-Drop-last_vm_update-fence-after-KFD-VM-up.patch deleted file mode 100644 index 83d39922..00000000 --- a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1590-drm-amdgpu-Drop-last_vm_update-fence-after-KFD-VM-up.patch +++ /dev/null @@ -1,64 +0,0 @@ -From fe3221262c2a338f21c942c1899437e15838dbf5 Mon Sep 17 00:00:00 2001 -From: Felix Kuehling <Felix.Kuehling@amd.com> -Date: Tue, 14 Feb 2017 19:11:57 -0500 -Subject: [PATCH 1590/4131] drm/amdgpu: Drop last_vm_update fence after KFD VM - updates - -KFD can use one sync object while updating multiple GPUs' page tables -at once during evictions. This violates an assumption that the -sync->last_vm_update fence is always updated with fences from the -same context (using amdgpu_sync_keep_later), resulting in lots of -WARNs in the kernel log. - -KFD doesn't need this fence. It seems to be used only for selecting -VMs for the graphics drivers. So we just drop that fence after KFD -page table updates to avoid context mismatches in later page table -updates using the same sync object. - -Bug: SWDEV-113250 - -Change-Id: Id36664d26bd6e981d8d4776409e5c6ff8fabd769 -Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> ---- - drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 18 ++++++++++++++++++ - 1 file changed, 18 insertions(+) - -diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c -index e1bea18..c27abc7 100644 ---- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c -+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c -@@ -893,6 +893,15 @@ static int unmap_bo_from_gpuvm(struct amdgpu_device *adev, - - amdgpu_sync_fence(adev, sync, bo_va->last_pt_update); - -+ /* Sync objects can't handle multiple GPUs (contexts) updating -+ * sync->last_vm_update. Fortunately we don't need it for -+ * KFD's purposes, so we can just drop that fence. -+ */ -+ if (sync->last_vm_update) { -+ fence_put(sync->last_vm_update); -+ sync->last_vm_update = NULL; -+ } -+ - return 0; - } - -@@ -930,6 +939,15 @@ static int update_gpuvm_pte(struct amdgpu_device *adev, - /* Remove PTs from LRU list (reservation removed PD only) */ - amdgpu_vm_move_pt_bos_in_lru(adev, vm); - -+ /* Sync objects can't handle multiple GPUs (contexts) updating -+ * sync->last_vm_update. Fortunately we don't need it for -+ * KFD's purposes, so we can just drop that fence. -+ */ -+ if (sync->last_vm_update) { -+ fence_put(sync->last_vm_update); -+ sync->last_vm_update = NULL; -+ } -+ - return 0; - } - --- -2.7.4 - |