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Re: [Xen-devel] Will Xen change the mapping after PCIe reset for the VT-d device?

  • To: "Neo Jia" <neojia@xxxxxxxxx>
  • From: "pradeep singh rautela" <rautelap@xxxxxxxxx>
  • Date: Wed, 1 Oct 2008 13:23:37 +0530
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
  • Delivery-date: Wed, 01 Oct 2008 00:54:01 -0700
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On Wed, Oct 1, 2008 at 12:33 PM, Neo Jia <neojia@xxxxxxxxx> wrote:
> hi,
> After a secondary bus reset Xen will restore the PCI configure space
> for the VT-d device, will the mapping still valid as we are using the
> original BARs?
> Let's assume the guest device driver will not change the BARs as Xen
> only save the register after guest shutdown/reset.

Won't SR(MR) PCI Manager take care of this? ( provided it sits in the
Xen hypervisor)

> Thanks,
> Neo
> --
> I would remember that if researchers were not ambitious
> probably today we haven't the technology we are using!
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Pradeep Singh Rautela

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