Patch to detect 8254 timer munging in BIOS calls (needs testing)

Joerg Sonnenberger joerg at
Sat Nov 20 10:59:09 PST 2004

On Sat, Nov 20, 2004 at 05:28:05PM -0000, Andreas Hauser wrote:
> dillon wrote @ Fri, 19 Nov 2004 14:00:51 -0800 (PST):
> >     The question is: (a) does this work (detect the access and print the
> >     warning) and (b) prevent runaway clocks.
> Seems to work, but the correction seems to be one hour off.
> Without the patch my clock was pretty exactly running at twice the expected
> speed (especially noticable when i benchmarked some of my programms and got
> double of the expected times), now it runs aligned with the wall clock and
> the benchmarks are back to what was expected.

Is your system time in UTC or localtime? Does your BIOS have a local time


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