lkml.org 
[lkml]   [2007]   [Sep]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc
From
Date
On Sun, 09 Sep 2007 09:27:06 +0200, Andi Kleen said:
> > Updating on this issue: Both myself and another person have reported on
> > the RedHat bugzilla that it's a clocksource issue - if you are using the
> > hpet clocksource, the time warps, but booting with clocksource=acpi_pm works.
> >
> > This ring any bells?
>
> Does this patch fix it?
> -Andi
>
> Add missing mask operation to vdso
>
> vdso vgetns() didn't mask the time source offset calculation, which could
> lead to time problems with 32bit HPET. Add the masking.
>
> Thanks to Chuck Ebbert for tracking down.
>
> Signed-off-by: Andi Kleen <ak@suse.de>

Confirming that does indeed fix it - booted with hpet clocksource and vdso=1,
and the time didn't warp at the 5-minute mark.

Tested-By: Valdis Kletnieks <valdis.kletnieks@vt.edu>
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2007-09-10 21:11    [W:0.120 / U:0.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site