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Re: [XEN PATCH] x86/hvm: make ACPI PM timer support optional



On Mon, 16 Sep 2024, Roger Pau Monné wrote:
> On Mon, Sep 16, 2024 at 09:37:57AM +0300, Sergiy Kibrik wrote:
> > Introduce config option X86_PMTIMER so that pmtimer driver can be disabled 
> > on
> > systems that don't need it.
> 
> Same comment as in the VGA patch, you need to handle the user passing
> X86_EMU_PM.  It's not OK to just ignore the flag if the hypervisor is
> built without ACPI PM timer support.

I also think that the flag should not be ignored. I think that Xen
should return error if a user is passing a domain feature not supported
by a particular version of the Xen build. I don't think that libxl needs
to be changed as part of this patch necessarily.

 


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