On Dec 11, 2007 11:24 AM, Neil Horman <[email protected]> wrote:
> On Tue, Dec 11, 2007 at 11:46:34AM -0700, Eric W. Biederman wrote:
> > Neil Horman <[email protected]> writes:
> >
> > Ok. My only remaining nit to pick is that fix_hypertransport_config
> > is right in the middle of the nvidia quirks, which can be a bit
> > confusing when reading through the code. Otherwise I think this
> > is a version that we can merge.
> >
> Sure, I'll move it to the top of the file
>
> > Let's get a clean description on this thing and send it to the
> > current x86 maintainers. Thomas, Ingo, and HPA
> >
>
> Clean Summary:
>
> Recently a kdump bug was discovered in which a system would hang inside
> calibrate_delay during the booting of the kdump kernel. This was caused by the
> fact that the jiffies counter was not being incremented during timer
> calibration. The root cause of this problem was found to be a bios
> misconfiguration of the hypertransport bus. On system affected by this hang,
> the bios had assigned APIC ids which used extended apic bits (more than the
> nominal 4 bit ids's), but failed to configure bit 18 of the hypertransport
should be bit 17.
YH
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