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On 26/03/12 20:43, Simon Waters wrote: > On 26/03/12 20:14, Simon Waters wrote: >> Does this mean that to have a clocksource of jiffies available in the >> guest I have to have access to the dom0 configuration? > Okay I see to have a clocksource of "jiffies" you have to add the > "clocksource=jiffies" as an argument to the kernel (e.g. via > /etc/default/grub these days). > > It isn't present in available_clocksource until this argument is added, > when it is both the current clocksource and added to the list. > > It may seem trivial but it isn't explained anywhere, and the other clock > sources are listed even if they aren't in use. > > The documentation says it specifies the default clocksource, not that it > magics up clock sources. > > I have wasted so much time for want of this being explained in the > documentation. > Ah, you just beat me to it - I was part way through typing just that as a reply. Have you actually tested it successfully? I'm a bit rusty on Xen as pretty much everywhere I work is on ESX or KVM these days, but I remember this bug well from a year or two back. Totally agree the documentation is a little, um, shall we just say, 'imprecise'. Mat -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq