[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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

  • To: "Wei, Gang" <gang.wei@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Wed, 14 Oct 2009 11:07:18 +0100
  • Cc:
  • Delivery-date: Wed, 14 Oct 2009 03:07:50 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcpMsGwu0IeJNY2DS/e3SZDkkFb3+AABbBap
  • Thread-topic: [PATCH] Append 'nohpet' in dom0 cmdline to prevent dom0 from using HPET

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

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.