linux-kernel - [PATCH 1/3] iommu/vt-d: Fix wrong use of pasid config

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Date: Thu, 11 Apr 2024 11:07:42 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Joerg Roedel <joro@...tes.org>
Cc: Jacob Pan <jacob.jun.pan@...ux.intel.com>,
	Xuchun Shang <xuchun.shang@...ux.alibaba.com>,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] iommu/vt-d: Fix wrong use of pasid config

From: Xuchun Shang <xuchun.shang@...ux.alibaba.com>

The commit "iommu/vt-d: Add IOMMU perfmon support" introduce IOMMU
PMU feature, but use the wrong config when set pasid filter.

Fixes: 7232ab8b89e9 ("iommu/vt-d: Add IOMMU perfmon support")
Signed-off-by: Xuchun Shang <xuchun.shang@...ux.alibaba.com>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
Link: https://lore.kernel.org/r/20240401060753.3321318-1-xuchun.shang@linux.alibaba.com
Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
---
 drivers/iommu/intel/perfmon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/intel/perfmon.c b/drivers/iommu/intel/perfmon.c
index cf43e798eca4..44083d01852d 100644
--- a/drivers/iommu/intel/perfmon.c
+++ b/drivers/iommu/intel/perfmon.c
@@ -438,7 +438,7 @@ static int iommu_pmu_assign_event(struct iommu_pmu *iommu_pmu,
 	iommu_pmu_set_filter(domain, event->attr.config1,
 			     IOMMU_PMU_FILTER_DOMAIN, idx,
 			     event->attr.config1);
-	iommu_pmu_set_filter(pasid, event->attr.config1,
+	iommu_pmu_set_filter(pasid, event->attr.config2,
 			     IOMMU_PMU_FILTER_PASID, idx,
 			     event->attr.config1);
 	iommu_pmu_set_filter(ats, event->attr.config2,
-- 
2.34.1