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

[Tej <bewith.tej@xxxxxxxxx>]

On 10/6/08, pradeep singh rautela <rautelap@xxxxxxxxx> wrote:
> On Wed, Oct 1, 2008 at 10:52 PM, Neo Jia <neojia@xxxxxxxxx> wrote:
>> Could you show me where the PCI manager in the Xen hypervisor?
>
> I do not know but I doubt if it is in there yet.
> Maybe someone better can ans this question.
> What I said was from simple SR-IOV specification.

SR-IOV implementation is out there, PCIM has to be driver specific
rather a generic implementation in Hypervisor.

http://lkml.org/lkml/2008/9/1/99.
Now Code bases says that use the functionality in driver to enable IOV
configuration space.


>
> Thanks,
>
>>
>> Thanks,
>> Neo
>>
>> On Wed, Oct 1, 2008 at 12:53 AM, pradeep singh rautela
>> <rautelap@xxxxxxxxx> wrote:
>>> 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,
>>>      --Pradeep
>>>>
>>>> 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
>>> http://eagain.wordpress.com
>>> http://emptydomain.googlepages.com
>>>
>>
>>
>>
>> --
>> I would remember that if researchers were not ambitious
>> probably today we haven't the technology we are using!
>>
>
>
>
> --
> Pradeep Singh Rautela
> http://eagain.wordpress.com
> http://emptydomain.googlepages.com
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>

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