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RE: [PATCH v1 05/25] xen: introduce CONFIG_DOMCTL
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: "Penny, Zheng" <penny.zheng@xxxxxxx>
- Date: Mon, 4 Aug 2025 08:29:11 +0000
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- Cc: "Huang, Ray" <Ray.Huang@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, "Orzel, Michal" <Michal.Orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
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- Thread-topic: [PATCH v1 05/25] xen: introduce CONFIG_DOMCTL
[Public]
> -----Original Message-----
> From: Jan Beulich <jbeulich@xxxxxxxx>
> Sent: Monday, August 4, 2025 3:41 PM
> To: Penny, Zheng <penny.zheng@xxxxxxx>
> Cc: Huang, Ray <Ray.Huang@xxxxxxx>; Andrew Cooper
> <andrew.cooper3@xxxxxxxxxx>; Anthony PERARD <anthony.perard@xxxxxxxxxx>;
> Orzel, Michal <Michal.Orzel@xxxxxxx>; Julien Grall <julien@xxxxxxx>; Roger Pau
> Monné <roger.pau@xxxxxxxxxx>; Stefano Stabellini <sstabellini@xxxxxxxxxx>;
> xen-
> devel@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH v1 05/25] xen: introduce CONFIG_DOMCTL
>
> On 03.08.2025 11:47, Penny Zheng wrote:
> > --- a/xen/common/Kconfig
> > +++ b/xen/common/Kconfig
> > @@ -627,6 +627,10 @@ config SYSCTL
> > This option shall only be disabled on some dom0less systems, or
> > PV shim on x86, to reduce Xen footprint.
> >
> > +config DOMCTL
> > + bool "Enable domctl hypercall"
> > + def_bool y
> > +
>
> Just to re-iterate - we don't think we want things to be this fine-grained.
> (As an aside, nit: "bool" and "def_bool" are partly redundant with one
> another.)
>
Are we suggesting to use one Kconfig, maybe like CONFIG_XENCTL(not a good
choice, just popping in my head...), to wrap all scenarios, including
sysctl-op, domctl-op, jiqian's platform-op, etc ? In which case, maybe we still
submit commits(or features) serie by serie, more easy to review, but only when
all is completed, we make this Kconfig as an selectable option ?
> Jan
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