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authorTom Lyon <pugs@cisco.com>2010-07-02 16:56:14 -0400
committerJoerg Roedel <joerg.roedel@amd.com>2010-07-19 15:44:25 +0200
commit323f99cbc35c52a65dea9d072b3ecf1e662240d2 (patch)
treedb4420fb391465df818949a2190e8acd8637164f /drivers/pci/intel-iommu.c
parent1c5474a65bf15a4cb162dfff86d6d0b5a08a740c (diff)
downloadlinux-linaro-stable-323f99cbc35c52a65dea9d072b3ecf1e662240d2.tar.gz
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 <pugs@cisco.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/pci/intel-iommu.c')
-rw-r--r--drivers/pci/intel-iommu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index c9171be74564..6a5af18faf68 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;
}