Re: [Xen-devel] Xen regressions for ARM SMMU (non pci-passthrough)

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

On Tue, Oct 28, 2014 at 07:53:07PM +0530, manish jaggi wrote:
> On 28 October 2014 19:27, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 
> wrote:
> > On Tue, Oct 28, 2014 at 02:49:16PM +0530, manish jaggi wrote:
> >> On 27 October 2014 18:56, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
> >> > Hello Manish,
> >> >
> >> > On 10/27/2014 09:54 AM, manish jaggi wrote:
> >> >> On 27 October 2014 14:57, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> >> >>> On Mon, 2014-10-27 at 13:56 +0530, manish jaggi wrote:
> >> >>>> I am trying to find out about  the tests which are part of the Xen
> >> >>>> regression suite  for Arm which tests the SMMU and non pic-passthrough
> >> >>>> feature.
> >> >>>
> >> >>> There are currently no such tests in the osstest suite.
> >> >
> >> > Device passthrough is not supported in Xen upstream. So adding test for
> >> > it is not yet relevant.
> >> >
> >> Is it not targeted for Xen 4.5 ? I believed it was part of 4.5 release
> >
> > MMIO has been added in Xen 4.5. PCI passthrough = no.
> In my mail I refer to non-pci device passthrough and not pci
> passthrough. PCI passthrough is targeted in 4.6.
> As per the Xen 4.5 development update mail IMHO non-pci passthrough
> (dt node passthrough) is going in 4.5
> 
> *  Linux ARM - Device assigment (fair)

Well, that is the Linux side, not the Xen side.

>   -  Julien Grall
> 
> My PCI passthrough work is based on juliens non-pci passthrough xen
> unstable tree, which I assume to be merged in 4.5 and I would rebase

Which tree is that?

> on the 4.5 release.

We are in Xen 4.5 RC1 so the bar for new features is high.

> 
> 
> >>
> >> > For SMMU, there is no need to have specific test. Any platform with SMMU
> >> > describe in the device tree will use the SMMU drivers in Xen.
> >> >
> >> > We have only one platform with SMMU platform in OSS-test which is
> >> > midway. But the device tree provided upstream doesn't have the SMMU 
> >> > nodes.
> >> >
> >> >>>
> >> >> Is Julien Planning to add the tests ?
> >> >
> >> > I don't plan to add any test or make midway uses SMMU for testing. You
> >> > are welcome to send a patch for it.
> >> Is it not tested on Foundation Model ?
> >
> > I am confused. Do you have an foundation model? Are you seeing issues
> > with it? Did you report the bug to xen-devel?
> >
> > Or are you merely asking whether said hardware has been tested?
> > Do you have that hardware?
> I was enquiring that is there any other platform the Xen 4.5 non
> pci-device passthrough works other than midway.
> >> >
> >> > Regards,
> >> >
> >> > --
> >> > Julien Grall
> >>
> >> _______________________________________________
> >> Xen-devel mailing list
> >> Xen-devel@xxxxxxxxxxxxx
> >> http://lists.xen.org/xen-devel

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