Re: [Xen-devel] ARM Xen Bug #45: Is there a solution?

[Julien Grall <julien.grall@xxxxxxx>]

On 24/05/2016 14:39, Dirk Behme wrote:
> Hi Julien,
Hello Dirk,

> On 23.05.2016 22:15, Julien Grall wrote:
> > Hello Dirk,
> >
> > > is there a solution for
> > >
> > > arm: domain 0 disables clocks which are in fact being used
> > > http://bugs.xenproject.org/xen/bug/45
> > >
> > > ?
> > >
> > > On an ARM based board I have to use 'clk_ignore_unused' preventing that
> > > Dom0 disables the UART clock for the console UART configured with
> > > console=hvc0.
> > There is no better solution than passing "clk_ignore_unused" on the
> > kernel command line so far.
>
> What would be the solution for this issue? The
>
> "propagate any clock related properties from the UART
> node into the Xen hypervisor node"
>
> mentioned in the ticket?
That is correct. Xen would copy the property "clocks" of the UART into 
the hypervisor node.
DOM0 would then parse the clocks associated to this node and mark them 
as used by Xen (I think CLK_IGNORE_UNUSED could do the job for us).
Regards,

--
Julien Grall

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