iommu/amd: Detect and enable guest vAPIC support

Browse source

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>

...

This commit is contained in:

Suravee Suthikulpanit 2016-08-23 13:52:32 -05:00 • committed by Joerg Roedel

parent 29b4817d40

commit 3928aa3f57

4 changed files with 99 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

Documentation/kernel-parameters.txt

View file

71

drivers/iommu/amd_iommu_init.c

View file

1

drivers/iommu/amd_iommu_proto.h

View file

24

drivers/iommu/amd_iommu_types.h

View file