Theoretically, source id check is not mandatory in the context we use
VT-D here (i.e. non VM one, just multi-vector MSI support)
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
VT-D will only be enabled if MSI multi-vector will also be requested,
on x86_64, for all boards BUT QEMU ones.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
There is no point to enable VT-D if PCIE MSI multi-vector support is not
requested, as VT-D is uniquely being used to remap MSI multi-vector
based interrupts.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Depending on a VT-D capability, it might be necessary to flush objects
from the cache.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
In XAPIC mode, it's possible to tell VT-D to let interrupt in compatible
format passing through.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Such interrupt remapping controller may be found along with Intel VT-D
hardware. Its base-address is via ACPI, and it enables up to 64K
interrupt indexes.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
