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Subject[PATCH 02/10] iommu/vt-d: Set IOASID capacity when SVM is enabled
Date
Assign system-wide PASID capacity with enumerated max value.
Currently, all Intel SVM capable devices should support full 20 bits of
PASID value.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
drivers/iommu/intel-iommu.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a699a765c983..ec3fc121744a 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3510,6 +3510,10 @@ static int __init init_dmars(void)
if (ret)
goto free_iommu;

+ /* PASID is needed for scalable mode irrespective to SVM */
+ if (intel_iommu_sm)
+ ioasid_install_capacity(intel_pasid_max_id);
+
/*
* for each drhd
* enable fault log
--
2.7.4
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