iommu/vt-d: Remove the pasid present check in prq_event_thread

PASID is not strictly needed when handling a PRQ event; remove the check
for the pasid present bit in the request. This change was not included
in the creation of prq.c to emphasize the change in capability checks
when handing PRQ events.

Signed-off-by: Klaus Jensen <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Joel Granados <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>

Author: birkelund

drivers/iommu/intel/prq.c

@@ -222,20 +222,14 @@ static irqreturn_t prq_event_thread(int irq, void *d)
 		req = &iommu->prq[head / sizeof(*req)];
 		address = (u64)req->addr << VTD_PAGE_SHIFT;
 
-		if (unlikely(!req->pasid_present)) {
-			pr_err("IOMMU: %s: Page request without PASID\n",
+		if (unlikely(!is_canonical_address(address))) {
+			pr_err("IOMMU: %s: Address is not canonical\n",
 			       iommu->name);
 bad_req:
 			handle_bad_prq_event(iommu, req, QI_RESP_INVALID);
 			goto prq_advance;
 		}
 
-		if (unlikely(!is_canonical_address(address))) {
-			pr_err("IOMMU: %s: Address is not canonical\n",
-			       iommu->name);
-			goto bad_req;
-		}
-
 		if (unlikely(req->pm_req && (req->rd_req | req->wr_req))) {
 			pr_err("IOMMU: %s: Page request in Privilege Mode\n",
 			       iommu->name);