Re: [Xen-devel] Xen 4.5-rc1 update (RC1 is out 2014-Oct-24th)

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Konrad,

On 31/10/2014 21:01, Konrad Rzeszutek Wilk wrote:
> On Fri, Oct 31, 2014 at 02:31:41PM +0000, Julien Grall wrote:
> > On 10/31/2014 02:24 PM, Konrad Rzeszutek Wilk wrote:
> > > > > *  PVH - PCI passthrough for DomU.
> > > > I am working on Cavium Thunder (ARM64) on this feature.
> > > > [Xen SMMU driver changes + PCI passthrough changes in Xen and Linux]
> > FYI, I'm currently reworking the SMMU drivers to resync with Linux. With
> > thoses changes, you should not need to modify the SMMU code.
> Thank you for the update. Put your name behind that for 4.6.
> > > Ok, replaced Julien's name with yours. Please make sure
> > > that for the Linux patches you CC xen-devel and the
> > > maintainers (David, Stefano, Boris and me).
> > There is 2 distinct passthrough: platform (i.e non-PCI) and PCI one.
> >
> > While Manish is working on PCI passthrough, I'm still working the
> > non-PCI one. Please don't drop my name.
> I thought that Arianna's patches had taken care of that (the MMIO
> part?). Or does each platform need a different implementation of
> that?
To passthrough a platform device you need to be able to assign the 
device to the guest via the IOMMU and map MMIOs (done by Arianna's 
series) and interrupts.
There is also a toolstack part to add the description of the device in 
the device tree. See the V2 [1] for more details.
[1] http://lists.xen.org/archives/html/xen-devel/2014-07/msg04090.html

Regards,

--
Julien Grall


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