Re: [Xen-devel] Question about the XEN platform pci

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Apr 12, 2016 at 02:19:48AM +0000, Wu, Bob wrote:
> 
> Really thanks for your reply.

Hey!

CC-ing Xen-devel back on. Please do not drop it and please don't
top-post.
> 
> Can you explain a little more?

I am not sure what you want me to explain. Perhaps if you
read http://xenbits.xen.org/docs/unstable/misc/hvm-emulated-unplug.html
it may become clearer?

> Is the xen platform pci driver the only purpose for telling QEMU  that don’t 
> emulate the IDE driver?

And network.
> I think it can be done by a simple way, but don't need use this huge platform 
> driver.

?
> 
> I guess this is for PCI pass through in XEN HVM mode, but don't sure.

No. 
> 
> Thanks,
> Bob
> 
> 
> -----Original Message-----
> From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx] 
> Sent: 2016年4月11日 22:24
> To: Wu, Bob
> Cc: xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] Question about the XEN platform pci
> 
> On Fri, Apr 08, 2016 at 08:52:08AM +0000, Wu, Bob wrote:
> > 
> > Sorry bother, I read the XEN source code recently, and found the XEN 
> > platform PCI code under drivers/xen/platform-pci.c, and I can't fully under 
> > this driver's affect, can anybody explain a little for me?
> > 
> > Is the platform PCI driver for PV-split-PCI-driver-model such as the 
> > pci-frontend/pci-backend? or for PCI pass-through model? Or for other 
> > purpose?
> > I saw the xenbus_pcifront_driver/ xenbus_xen_pcibk_driver are registered on 
> > XENBUS, so I guess the platform-PCI-driver is not for PV PCI driver.
> > 
> 
> It is for the QEMU driver. To tell QEMU to stop emulating the IDE/network.
> 
> > Really thank you for your replay.
> > 
> > Thanks,
> > Bob
> > 
> 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> 

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