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>
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index be22ad8..0a2ba40 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -30,6 +30,7 @@
};
#define IOMMU_CAP_CACHE_COHERENCY 0x1
+#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */
struct iommu_ops {
int (*domain_init)(struct iommu_domain *domain);