This is a note to let you know that I've just added the patch titled
iommu/vt-d: Fix a bug for PDP check in prq_event_thread
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-vt-d-fix-a-bug-for-pdp-check-in-prq_event_thre.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 60c4f423ad0cbe03a285a5c0b6be04ce26e87a26
Author: Liu, Yi L <yi.l.liu@xxxxxxxxx>
Date: Fri Oct 30 10:37:24 2020 +0800
iommu/vt-d: Fix a bug for PDP check in prq_event_thread
[ Upstream commit 71cd8e2d16703a9df5c86a9e19f4cba99316cc53 ]
In prq_event_thread(), the QI_PGRP_PDP is wrongly set by
'req->pasid_present' which should be replaced to
'req->priv_data_present'.
Fixes: 5b438f4ba315 ("iommu/vt-d: Support page request in scalable mode")
Signed-off-by: Liu, Yi L <yi.l.liu@xxxxxxxxx>
Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx>
Acked-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1604025444-6954-3-git-send-email-yi.y.sun@xxxxxxxxxxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index 1d3816cd65d57..ec69a99b99bab 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -646,7 +646,7 @@ static irqreturn_t prq_event_thread(int irq, void *d)
resp.qw0 = QI_PGRP_PASID(req->pasid) |
QI_PGRP_DID(req->rid) |
QI_PGRP_PASID_P(req->pasid_present) |
- QI_PGRP_PDP(req->pasid_present) |
+ QI_PGRP_PDP(req->priv_data_present) |
QI_PGRP_RESP_CODE(result) |
QI_PGRP_RESP_TYPE;
resp.qw1 = QI_PGRP_IDX(req->prg_index) |
