Re: [Xen-devel] [PATCH] xen/arm: register clocks used by the hypervisor

[Julien Grall <julien.grall@xxxxxxx>]

Hi Dirk,

On 29/06/16 16:49, Dirk Behme wrote:
> On 22.06.2016 17:26, Julien Grall wrote:
> > On 21/06/16 11:16, Dirk Behme wrote:
> > Would it be possible to use the flags CLK_IGNORE_UNUSED instead? So the
> > clock will be ignored by clk_disable_unused_subtree.
>
> Yes, using CLK_IGNORE_UNUSED is an option. But ;)
>
> But we can't set it directly in enlighten.c as we can't access the flags
> part of the clock structs from outside the core clock code.
Maybe we can introduce a new function in the kernel to set the flags?

Anyway, I am not very familiar with the clock subsystem. So, as 
suggested by Mark, I would recommend you to start a discussion with with 
the clock maintainers to see what would be the best way to avoid DOM0 to 
disable any clock used by Xen or a guest.
Regards,

--
Julien Grall

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