diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 984c7a6ea4fe..953d86ca6d2b 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3285,6 +3285,12 @@ static int __init init_dmars(void) if (!ecap_pass_through(iommu->ecap)) hw_pass_through = 0; + + if (!intel_iommu_strict && cap_caching_mode(iommu->cap)) { + pr_info("Disable batched IOTLB flush due to virtualization"); + intel_iommu_strict = 1; + } + #ifdef CONFIG_INTEL_IOMMU_SVM if (pasid_supported(iommu)) intel_svm_init(iommu);