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RE: [PATCH v2 24/26] xen/domctl: wrap arch-specific domctl-op with CONFIG_MGMT_HYPERCALLS
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: "Penny, Zheng" <penny.zheng@xxxxxxx>
- Date: Sat, 11 Oct 2025 06:44:56 +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>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
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- Thread-topic: [PATCH v2 24/26] xen/domctl: wrap arch-specific domctl-op with CONFIG_MGMT_HYPERCALLS
[Public]
Hi,
Sorry for the late reply. Just come back from national holiday.
> -----Original Message-----
> From: Jan Beulich <jbeulich@xxxxxxxx>
> Sent: Thursday, September 11, 2025 9:03 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>;
> Bertrand Marquis <bertrand.marquis@xxxxxxx>; Volodymyr Babchuk
> <Volodymyr_Babchuk@xxxxxxxx>; Tamas K Lengyel <tamas@xxxxxxxxxxxxx>;
> Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>; xen-
> devel@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH v2 24/26] xen/domctl: wrap arch-specific domctl-op with
> CONFIG_MGMT_HYPERCALLS
>
> > --- a/xen/lib/x86/Makefile
> > +++ b/xen/lib/x86/Makefile
> > @@ -1,3 +1,3 @@
> > obj-y += cpuid.o
> > obj-y += msr.o
> > -obj-y += policy.o
> > +obj-$(CONFIG_MGMT_HYPERCALLS) += policy.o
>
> Fair parts of cpuid.c also become unreachable. And all of msr.c afaics.
>
I just found that the functions defined here, as helpers/libraries, are used in
tools/libs/guest/xg_cpuid_x86.c too. Emmm, to make compiler happy, I still need
to provide stubs for them when MGMT_HYPERCALLS=n. Or any better suggestion?
> Jan
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