Re: [Xen-devel] Xen 4.2 and PCI hotplug.

["Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>]

> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: Wednesday, December 19, 2012 4:48 PM
> To: Zhang, Xiantao
> Cc: Konrad Rzeszutek Wilk; xen-devel
> Subject: Re: [Xen-devel] Xen 4.2 and PCI hotplug.
> 
> >>> On 19.12.12 at 09:13, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
> wrote:
> > Are you playing with Xen ?  so far,  Xen doesn't support PCIe device
> > hot-plug feature yet.
> 
> When saying Xen, I assume you mean the pv-ops kernel instead? So far I was
> under the impression that this worked even with the very old 2.6.18 tree (as
> much or as little as hotplug there worked in the native case). And given that
> there are no special requirements on the hypervisor to make this work, it's
> not even obvious to me what would be missing in the pv-ops kernel to make
> it work. 
Oh, my fault!  Perhaps we don't need to do anything for pv-ops kernel to 
support device hot-plug if native system has it supported.  Actually, we didn't 
do such testings before, since it is a native feature, not a Xen-specific one. 
Xiantao

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