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xen-devel
Re: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config options a
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To: |
Keir Fraser <keir@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config options and disableunsupported config options. |
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From: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Date: |
Fri, 16 Feb 2007 11:24:56 -0800 |
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Cc: |
xen-devel@xxxxxxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxx, Steven Hand <steven.hand@xxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Chris Wright <chrisw@xxxxxxxxxxxx>, Andi Kleen <ak@xxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, Christian Limpach <Christian.Limpach@xxxxxxxxxxxxx> |
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Fri, 16 Feb 2007 11:24:18 -0800 |
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<C1FBAFD7.99AB%keir@xxxxxxxxxxxxx> |
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Thunderbird 1.5.0.9 (X11/20070212) |
Keir Fraser wrote:
> We can extend the Xen timer interface quite easily and get rid of this one
> too. In fact it doesn't *much* matter if the CONFIG_HZ differs from the Xen
> ticker rate -- we modified the Linux timer ISR to handle timer interrupts at
> arbitrary times already. The only drawback is that jiffies updates in burts
> if CONFIG_HZ is higher than the actual tick rate, and this can affect some
> calibration constants and cause Linux to print out some weird values at
> start-of-day.
>
I was wondering what would happen if we tried that. I guess its
equivalent to having stolen time between each Xen tick.
J
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