Re: [Xen-devel] [PATCH v4 06/15] domctl: Add XEN_DOMCTL_acpi_access

[Julien Grall <julien.grall@xxxxxxx>]

Hi Boris,

On 12/12/16 16:11, Boris Ostrovsky wrote:
> On 12/12/2016 08:28 AM, Julien Grall wrote:
> > Hi Boris,
> >
> > On 29/11/16 15:33, Boris Ostrovsky wrote:
> > > This domctl will allow toolstack to read and write some
> > > ACPI registers. It will be available to both x86 and ARM
> > > but will be implemented first only for x86
> > Can you explain why we would need this on ARM?
> What this is meant to say is that the new domctl is not specific to x86
> and therefore is available as a common (as opposed to arch-specific)
> interface.
I thought you were planning to make this implemented on ARM and was 
trying to understanding why :).
> If ARM ever needs to access ACPI space from toostack it should be able
> to use it (provided that an implementation for that is available in
> arch/arm).
Ok. I can't tell whether we would need it in the future. Currently, it 
is not necessary.
Cheers,

--
Julien Grall

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