drm/amdgpu: switch the GDS only on demand v2
Switching the GDS space to often seems to be problematic.
This patch together with the following can avoid VM faults on context switch.
v2: extend commit message a bit
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Reviewed-by: Chunming Zhou <david1.zhou@amd.com> (v1)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index e63e57e..798d466 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -165,6 +165,8 @@
if (ib->ctx != ctx || ib->vm != vm) {
ring->current_ctx = old_ctx;
+ if (ib->vm_id)
+ amdgpu_vm_reset_id(adev, ib->vm_id);
amdgpu_ring_undo(ring);
return -EINVAL;
}
@@ -181,6 +183,8 @@
if (r) {
dev_err(adev->dev, "failed to emit fence (%d)\n", r);
ring->current_ctx = old_ctx;
+ if (ib->vm_id)
+ amdgpu_vm_reset_id(adev, ib->vm_id);
amdgpu_ring_undo(ring);
return r;
}