Messages in this thread | | | From | René Rebe <> | Subject | Re: [PATCH] x86_64: Test patch for ATI/Nvidia timer problems | Date | Sun, 27 Nov 2005 10:14:53 +0100 |
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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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