Re: [Xen-devel] Does XEN ARM support RTC in domu?

[Peng Fan <peng.fan@xxxxxxx>]

Hi Julien,

> -----Original Message-----
> From: Julien Grall [mailto:julien.grall@xxxxxxx]
> Sent: 2018年11月1日 2:52
> To: Peng Fan <peng.fan@xxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx; Stefano
> Stabellini <sstabellini@xxxxxxxxxx>
> Subject: Re: Does XEN ARM support RTC in domu?
> 
> 
> 
> On 10/31/18 1:57 PM, Peng Fan wrote:
> > Hi All,
> 
> Hi,
> 
> >
> > Just have a question, does XEN ARM support RTC in domu? To support Android
> in DomU, RTC is needed for alarm, but I did not find information about RTC on
> xen for domu. So this need a new RTC paravirtualization driver? Any 
> suggestions?
> 
> By RTC, do you mean Real-Time Clock? Something like PL031? Or do you have
> something else in mind?

Yes, Real Time Clock like PL031 in DomU. I do not have a good idea support RTC 
in ARM DomU,
KVM and XEN x86 seems use emulated RTC in qemu. Thinking of paravirtual RTC, 
and dom0
control the expire time for alarm.

Thanks,
Peng.

> 
> Cheers,
> 
> --
> Julien Grall
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