Query Shared Virtual Address/Memory capability is a generic feature. Report Intel SVM as SVA feature such that generic code such as Uacce [1] can use it. [1] https://lkml.org/lkml/2020/1/15/604
Signed-off-by: Jacob Pan <[email protected]> --- drivers/iommu/intel-iommu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 92c2f2e4197b..5eca6e10d2a4 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -6346,9 +6346,14 @@ intel_iommu_dev_has_feat(struct device *dev, enum iommu_dev_features feat) static int intel_iommu_dev_enable_feat(struct device *dev, enum iommu_dev_features feat) { + struct intel_iommu *intel_iommu = dev_to_intel_iommu(dev); + if (feat == IOMMU_DEV_FEAT_AUX) return intel_iommu_enable_auxd(dev); + if (feat == IOMMU_DEV_FEAT_SVA) + return intel_iommu->flags & VTD_FLAG_SVM_CAPABLE; + return -ENODEV; } -- 2.7.4 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
