1 files changed, 17 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/cik_ih.c b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
index 07d3d895da10..a870b354e3f7 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
@@ -237,8 +237,23 @@ static u32 cik_ih_get_wptr(struct amdgpu_device *adev)
  */
 static bool cik_ih_prescreen_iv(struct amdgpu_device *adev)
 {
-        /* Process all interrupts */
-        return true;
+        u32 ring_index = adev->irq.ih.rptr >> 2;
+        u16 pasid;
+
+        switch (le32_to_cpu(adev->irq.ih.ring[ring_index]) & 0xff) {
+        case 146:
+        case 147:
+                pasid = le32_to_cpu(adev->irq.ih.ring[ring_index + 2]) >> 16;
+                if (!pasid || amdgpu_vm_pasid_fault_credit(adev, pasid))
+                        return true;
+                break;
+        default:
+                /* Not a VM fault */
+                return true;
+        }
+
+        adev->irq.ih.rptr += 16;
+        return false;
 }
 
  /**