From: Christian König <christian.koenig@xxxxxxx>
If updating the PDs fails we now invalidate all entries to try again later.
Signed-off-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 34 +++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 344f943..b877f9f3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1105,6 +1105,32 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev,
}
/*
+ * amdgpu_vm_invalidate_level - mark all PD levels as invalid
+ *
+ * @parent: parent PD
+ *
+ * Mark all PD level as invalid after an error.
+ */
+static void amdgpu_vm_invalidate_level(struct amdgpu_vm_pt *parent)
+{
+ unsigned pt_idx;
+
+ /*
+ * Recurse into the subdirectories. This recursion is harmless because
+ * we only have a maximum of 5 layers.
+ */
+ for (pt_idx = 0; pt_idx <= parent->last_entry_used; ++pt_idx) {
+ struct amdgpu_vm_pt *entry = &parent->entries[pt_idx];
+
+ if (!entry->bo)
+ continue;
+
+ entry->addr = ~0ULL;
+ amdgpu_vm_invalidate_level(entry);
+ }
+}
+
+/*
* amdgpu_vm_update_directories - make sure that all directories are valid
*
* @adev: amdgpu_device pointer
@@ -1116,7 +1142,13 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev,
int amdgpu_vm_update_directories(struct amdgpu_device *adev,
struct amdgpu_vm *vm)
{
- return amdgpu_vm_update_level(adev, vm, &vm->root, 0);
+ int r;
+
+ r = amdgpu_vm_update_level(adev, vm, &vm->root, 0);
+ if (r)
+ amdgpu_vm_invalidate_level(&vm->root);
+
+ return r;
}
/**
--
2.7.4
