|
|
|
|
|
|
|
|
|
|
xen-devel
Re: [Xen-devel] RFC -- virtualisable NIC support in Xen
Caitlin Bestler wrote:
When the App/DomU posts a buffer (for TX or RX),
what address does it use, and how does the hardware
understand it?
It uses a "buffer address". This is essentially an index into a
"buffer-table" which is stored on the NIC. This table is used to lookup
physical addresses that the NIC will DMA to/from.
The buffer-table is programmed from Dom0.
The buffer-table is effectively our IOMMU/page-tables.
Hope this helps,
Greg
--
Greg Law glaw@xxxxxxxxxxxxxx +44 1223 518 040
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
|
|