[Xen-devel] Re: [PATCH] Append 'nohpet' in dom0 cmdline to prevent dom0 from using HPET

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 14/10/2009 10:26, "Wei, Gang" <gang.wei@xxxxxxxxx> wrote:

> Xen is using HPET to wakeup cpu from deep c-states, so the HPET usage in dom0
> must be fobidden. In 2.6.18-xen, the HPET was by default disabled in config
> file. For upstream kernel built for pv dom0, it is not practical to disable
> dom0
> HPET usage in that way because the same image may be also using as bare metal
> kernerl. So add cmdline option to do this thing for dom0.

This Linux-version-specific cmdline construction is getting ridiculous.
Surely Linux's Xen-pv_ops code can get in early enough to add this to its
own command line, if it needs it?

 -- Keir



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