From 323f99cbc35c52a65dea9d072b3ecf1e662240d2 Mon Sep 17 00:00:00 2001 From: Tom Lyon Date: Fri, 2 Jul 2010 16:56:14 -0400 Subject: iommu-api: Extension to check for interrupt remapping This patch allows IOMMU users to determine whether the hardware and software support safe, isolated interrupt remapping. Not all Intel IOMMUs have the hardware, and the software for AMD is not there yet. Signed-off-by: Tom Lyon Signed-off-by: Joerg Roedel --- drivers/pci/intel-iommu.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index c9171be7456..6a5af18faf6 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -3698,6 +3698,8 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain, if (cap == IOMMU_CAP_CACHE_COHERENCY) return dmar_domain->iommu_snooping; + if (cap == IOMMU_CAP_INTR_REMAP) + return intr_remapping_enabled; return 0; } -- cgit v1.2.3-70-g09d2