Re: 2.6.21-rc7: HPET enabled freeze my machine at boot

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John,

The dynticks doesn't affect HPET here at all. The machine freeze with or w/o dynticks.

Gonna try the patch and i tell you.

Guilherme M. Schroeder
Network Administrator
Central de Vendas Informatica LTDA
Tel.: (11) 3665-2000 Ramal: 2008
http://www.centralinf.com.br


john stultz wrote:
On Sat, 2007-04-21 at 20:07 -0300, Guilherme M. Schroeder wrote:
john stultz wrote:
On 4/19/07, guilherme <[email protected]> wrote:
Hi,

If i enable "High Resolution Timer Support", my machine stops here at boot:

Clocksource tsc unstable (delta = -297340790165 ns)
Time: hpet clocksource has been installed.

If i disable HPET, it boots fine.
Hmmm.. What happens if you boot w/ clocksource=acpi_pm ?


Boot ok with clocksource=acpi_pm and HPET enabled.
Any clue?


I'm suspecting that your HPET counter is being stopped for some reason,
although why I have no idea.

Just to get a clear picture, does this happen w/ "Tickless System
(Dynamic ticks)" disabled in the menuconfig?

Thomas, might we be actually stopping the HPET counter instead of
disabling the HPET interrupt w/ dynticks?

thanks
-john




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