Re: 2.6.27: 0 MHz CPU and wrong system time on AMD Geode system
From: Jordan Crouse
Date: Mon Oct 20 2008 - 16:23:38 EST
On 17/10/08 15:17 -0700, Alok Kataria wrote:
> On Thu, Oct 16, 2008 at 9:48 PM, Antipov Dmitry <dmantipov@xxxxxxxxx> wrote:
> > Jordan Crouse wrote:
> >> Could you try a 2.6.26 kernel? That will confirm that this is a new
> >> addition to 2.6.27.
> > Both 2.6.26 and 22.214.171.124 looks good (with CONFIG_GEODE_MFGPT_TIMER=y).
> Can you try the attached debug patch, it puts a printk message and
> will let us know what exaclty is failing during the calibration
> There were some major changes in the 2.6.27 cycle related to tsc calibration.
> Apart from the unification for 32 and 64bit, some checks were added in
> the code to make the calibration process more robust, maybe this
> specific machine is more prone to SMI's than other, as a result the
> checks are a little to harsh for this one.
> Along with the dmesg with this patch, could you also let us know how
> much is the frequency that the (2.6.26) kernel calibrates and what the
> actual freuqency is on that box ?
I just booted with 126.96.36.199 with high res timers on, and I can't recreate
on a generic Geode box. The only difference is that my system doesn't
have any MFGPT timers available, but that shouldn't matter if you have
CONFIG_GEODE_MFGPT_TIMER turned off.
Systems Software Development Engineer
Advanced Micro Devices, Inc.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/