I have recently bought a Intel Core I5-650 with Intel DQ57TM Board for my Homeserver.
I will run this system as virtualisation host based on XEN.
On the Intel-Homepage I saw that both components are VT-d capable and in the Board-Manual
I could see that there is in option to enable or disable
"Intel® Virtualization Technology for Directed I/O (VT-d)" in the bios.
That was the reason a have bought it.
On intel-Homepage on the VT-d explanation they say, that VT-d includeds
"interrupt remapping / DMA passthrough" and so on.
So I installed latest XEN 4.1.1 with latest DOM-0-Kernel and with
scare I determined that "Interrupt-Remapping" is not supported.
Here is my xm dmesg output:
(XEN) Intel VT-d Snoop Control not enabled. (XEN) Intel VT-d Dom0 DMA Passthrough not enabled. (XEN) Intel VT-d Queued Invalidation not enabled. (XEN) Intel VT-d Interrupt Remapping not enabled. (XEN) I/O virtualisation enabled
I can succesfully passthrough a device to guest but without interrupt-remapping and
only with shared interrupt (XEN-DomU Config: pci_msitranslate=0).
So I have searched a little bit around the web and have found that only
intel core i7 and new sandy bridge CPU´s will
completely support all VT-d features is that right?
Here has someone made the same experience:
I think Intel has to update there documentation for processors and boards.
There is only one TAB with "VT-d Yes or No". So I thought ok the components will do it.
There should be a extra tab with the sub-VT-d-Features.
So I have spend a lot of money for nothing. I need interrupt-remapping.
So before buy a new system I will be SURE that ALL VT-d features will be supported.
So what about this combination?
Intel Core I5-2500T
Intel DQ67SW Board
Or what about this?
For S1200BTS I found in the manuell bios settings to enable disable Interrupt Remapping and DMA Passthrough.
But does the E31220L support this?
Will this combination completely support all VT-d-
relevant featurse (Interrupt Remapping....etc)???