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path: root/drivers/iommu/intel/irq_remapping.c
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Diffstat (limited to 'drivers/iommu/intel/irq_remapping.c')
-rw-r--r--drivers/iommu/intel/irq_remapping.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index 2e9683e970f8..5962bb5027d0 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -494,7 +494,8 @@ static void iommu_set_irq_remapping(struct intel_iommu *iommu, int mode)
* Global invalidation of interrupt entry cache to make sure the
* hardware uses the new irq remapping table.
*/
- qi_global_iec(iommu);
+ if (!cap_esirtps(iommu->cap))
+ qi_global_iec(iommu);
}
static void iommu_enable_irq_remapping(struct intel_iommu *iommu)
@@ -680,7 +681,8 @@ static void iommu_disable_irq_remapping(struct intel_iommu *iommu)
* global invalidation of interrupt entry cache before disabling
* interrupt-remapping.
*/
- qi_global_iec(iommu);
+ if (!cap_esirtps(iommu->cap))
+ qi_global_iec(iommu);
raw_spin_lock_irqsave(&iommu->register_lock, flags);