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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2016-08-23 13:52:32 -0500 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-09-05 12:41:46 +0200 |
| commit | 3928aa3f5775fc4e40117077e97d73d8526039c9 (patch) | |
| tree | 4694f5be6a1013a1c159425f0df465b48034435b /drivers/iommu/amd_iommu_proto.h | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
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>
Diffstat (limited to 'drivers/iommu/amd_iommu_proto.h')
| -rw-r--r-- | drivers/iommu/amd_iommu_proto.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_proto.h b/drivers/iommu/amd_iommu_proto.h index 0bd9eb374462..faa3b4895cf0 100644 --- a/drivers/iommu/amd_iommu_proto.h +++ b/drivers/iommu/amd_iommu_proto.h @@ -38,6 +38,7 @@ extern int amd_iommu_enable(void); extern void amd_iommu_disable(void); extern int amd_iommu_reenable(int); extern int amd_iommu_enable_faulting(void); +extern int amd_iommu_guest_ir; /* IOMMUv2 specific functions */ struct iommu_domain; |