tree 4694f5be6a1013a1c159425f0df465b48034435b
parent 29b4817d4018df78086157ea3a55c1d9424a7cfc
author Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> 1471978352 -0500
committer Joerg Roedel <jroedel@suse.de> 1473072106 +0200

iommu/amd: Detect and enable guest vAPIC support

This patch introduces a new IOMMU driver parameter, amd_iommu_guest_ir,
which can be used to specify different interrupt remapping mode for
passthrough devices to VM guest:
    * legacy: Legacy interrupt remapping (w/ 32-bit IRTE)
    * vapic : Guest vAPIC interrupt remapping (w/ GA mode 128-bit IRTE)

Note that in vapic mode, it can also supports legacy interrupt remapping
for non-passthrough devices with the 128-bit IRTE.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>