From dbaabb25f441264d9029dc53e84a156269ecd275 Mon Sep 17 00:00:00 2001
From: Peter Xu <peterx@redhat.com>
Date: Fri, 19 May 2017 11:19:47 +0800
Subject: intel_iommu: support passthrough (PT)

Hardware support for VT-d device passthrough. Although current Linux can
live with iommu=pt even without this, but this is faster than when using
software passthrough.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Liu, Yi L <yi.l.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
---
 hw/i386/intel_iommu_internal.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'hw/i386/intel_iommu_internal.h')

diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index 29d67075f4..0e73a65bf2 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -187,6 +187,7 @@
 /* Interrupt Remapping support */
 #define VTD_ECAP_IR                 (1ULL << 3)
 #define VTD_ECAP_EIM                (1ULL << 4)
+#define VTD_ECAP_PT                 (1ULL << 6)
 #define VTD_ECAP_MHMV               (15ULL << 20)
 
 /* CAP_REG */
-- 
cgit 1.4.1