From: Jacob Pan <jacob.jun.pan@linux.intel.com>
Date: Mon, 5 Dec 2022 21:14:12 +0800
Subject: iommu/vt-d: Fix buggy QAT device mask
Git-commit: 81c95fbaebfa5990c3c786c8c3e87426a33106fe
Patch-mainline: v6.1
References: bsc#1208219
Impacted QAT device IDs that need extra dtlb flush quirk is ranging
from 0x4940 to 0x4943. After bitwise AND device ID with 0xfffc the
result should be 0x4940 instead of 0x494c to identify these devices.
Fixes: e65a6897be5e ("iommu/vt-d: Add a fix for devices need extra dtlb flush")
Reported-by: Raghunathan Srinivasan <raghunathan.srinivasan@intel.com>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Link: https://lore.kernel.org/r/20221203005610.2927487-1-jacob.jun.pan@linux.intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/intel/iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 5287efe247b1..644ca49e8cf8 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -1402,7 +1402,7 @@ static void domain_update_iotlb(struct dmar_domain *domain)
* check because it applies only to the built-in QAT devices and it doesn't
* grant additional privileges.
*/
-#define BUGGY_QAT_DEVID_MASK 0x494c
+#define BUGGY_QAT_DEVID_MASK 0x4940
static bool dev_needs_extra_dtlb_flush(struct pci_dev *pdev)
{
if (pdev->vendor != PCI_VENDOR_ID_INTEL)