Messages in this thread | | | Date | Wed, 9 Jul 2014 09:55:19 -0400 | From | Konrad Rzeszutek Wilk <> | Subject | Re: [Xen-devel] [PATCH v2] xen: Introduce 'xen_nopv' to disable PV extensions for HVM guests. |
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On Wed, Jul 09, 2014 at 01:10:03PM +0100, David Vrabel wrote: > On 08/07/14 21:52, konrad@kernel.org wrote: > > From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> > > > > By default when CONFIG_XEN and CONFIG_XEN_PVHVM kernels are > > run, they will enable the PV extensions (drivers, interrupts, timers, > > etc) - which is perfect. > > If it's "perfect" what's this option for? ;)
:-) > > I think you mean to say "which is the best option for the majority of > use cases".
Yes! > > > However, in some cases (kexec not fully wokring, benchmarking) > > we want to disable Xen PV extensions. As such introduce the > > 'xen_nopv' parameter that will do it. > > "working" > > I'm unconvinced about the utility of this option. The resulting kernel > will go like molasses and I'm not sure what the use of being any to > benchmark a configuration no one will use in practice. But it's a small > patch so > > Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Thank you.
> > David > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel
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