Re: [Xen-devel] Xen Q35 & virtual VTD support

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

Hello Tianyu,

I am CC'ing Anthony who should have a better idea about this. Also
please use my kernel.org email address for future correspondence.

What do you mean by reusing Q35 for Xen? If you mean using QEMU to
emulate a Q35 based machine for HVM guests, I think that should be OK.

Thanks,

Stefano


On Mon, 9 May 2016, Lan, Tianyu wrote:
> Hi All:       
> We are researching how to add virtual VTD support for Xen HVM
> guest. Current qemu has a basic virtual VTD support for Q35. I'd like to
> confirm whether Xen supports Q35 or not. Can we reuse it for Xen? Thanks.
> 
> The motivations of adding virtual VTD support for Xen prepare for
> 1) Shared Virtual Memory (SVM)
> 2) Increase max VCPUs > 255 (The feature relies on virtual VTD irq
> remapping function.)
> 
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> http://lists.xen.org/xen-devel
> 

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