[PATCH 2/6] iommu/vt-d: Remove the pasid present check in prq_event_thread

Joel Granados via B4 Relay
2024-09-04T13:18:13Z

From: Klaus Jensen <k.jensen@samsung.com>

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 <k.jensen@samsung.com>
Signed-off-by: Joel Granados <j.granados@samsung.com>
---
drivers/iommu/intel/prq.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/iommu/intel/prq.c b/drivers/iommu/intel/prq.c
index 3376f60082b5..5f2d01a9aa11 100644
--- a/drivers/iommu/intel/prq.c
+++ b/drivers/iommu/intel/prq.c
@@ -221,18 +221,12 @@ 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",
- 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;
+bad_req:
+ handle_bad_prq_event(iommu, req, QI_RESP_INVALID);
+ goto prq_advance;
}

if (unlikely(req->pm_req && (req->rd_req | req->wr_req))) {

--
2.43.0