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SubjectRe: [PATCH] x86_64: Test patch for ATI/Nvidia timer problems
Date
Hi,

On Saturday 26 November 2005 15:20, Andi Kleen wrote:
> Everybody who saw timing problems with ATI IXP based boards with x86-64
> or some Nvidia NForce4 boards please test this patch. Please send
> success/failure to me.

I try to give your patch a try on the ATI based MSI Megabook S270, today -
however even with the workaround of "noapic" I had timer drift on resuem from
ram if the cpu was scaled to a lower frequency when it was suspended.

The k8 cpufreq code failed to assert the current frequency and thus assumed a
wrong one:

Restarting tasks...<3>powernow-k8: ignoring illegal change in lo freq table-0
to 0x0
powernow-k8: transition frequency failed
done

Also my ACPI table only has two frequency entries, 800000 and 1600000 MHz - I
wonder if one could rework the powernow-k8 driver to interpolate values in
between to get smoother adaption of the frequency?

Yours,

--
René Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
http://www.exactcode.de | http://www.t2-project.org
+49 (0)30 255 897 45
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