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Re: [Xen-devel] [PATCH 1/1] x86/AMD: Fix setup ssss:bb:dd:f for d0 failed

On 8/30/2013 3:09 AM, Jan Beulich wrote:
Sorry for didn't get a chance to follow up with this sooner.  Ok, I see 
> the code you mentioned.
> However, if I understand this correctly, it is also mapping the bridge 
> to the domU
> along with the end-device.  This is not the same as what you mentioned 
> that the bridge should
> be mapped to only Dom0.
I don't think I ever said this. Whether we're talking about DomU or
Dom0 here is irrelevant. I'm just pointing out that bridges do get
mappings established for them whenever a device behind them gets

Ok, I think I understand it a bit more now. I'll modify the code to skip only the host bridge when they are not
specified in the IVRS as it is not needed to be mapped to a domain.  I'll send out the code shortly.

However, I also found out that t
he current AMD IOMMU driver maps other type of bridges
and they won't get reassigned when the end point devices downstream are assigned to other domain.
I don't think this is correct. I'll work on this and and send out a separate patch for this.

Thank you,


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