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xen-devel
RE: [Xen-devel] Re: [PATCH][VTD] pci mmcfg patch for x86-64 -version 3
>As I'm planning to
>work on multi-segment PCI support in Q1, this stuff will get revisited
>>again.
>
>Is that going to come through Linux again, or is this a Xen-only plan?
>
It will involve both xen and Linux. Segment information for the device will
come from dom0 Linux. Segment knowledge in VT-d will be added in xen. For
example, current vtd/dmar.c/acpi_find_matched_drhd_unit() assumes the entire
system has only one INCLUDE_ALL vt-d engine. In a multi PCI segment system,
each segment can have a INCLUDE_ALL VT-d engine.
Allen
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