Re: Linux 2.6.27-rc5: System boot regression caused by commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd

Rafael J. Wysocki
2008-08-29T22:28:20Z

On Friday, 29 of August 2008, Yinghai Lu wrote:
> On Fri, Aug 29, 2008 at 2:13 PM, Yinghai Lu <yhlu.kernel@gmail.com> wrote:
> > On Fri, Aug 29, 2008 at 12:57 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> On Friday, 29 of August 2008, Rafael J. Wysocki wrote:
> >>> On Friday, 29 of August 2008, Linus Torvalds wrote:
> >>> >
> >>> > Another week (my weeks do seem to be eight days, don't they? Very odd),
> >>> > another -rc.
> >>> >
> >>> > The dirstat pretty much says it all:
> >>> >
> >>> > 43.0% arch/arm/configs/
> >>> > 43.9% arch/arm/
> >>> > 25.5% arch/powerpc/configs/
> >>> > 26.8% arch/powerpc/
> >>> > 73.9% arch/
> >>> > 4.4% drivers/usb/musb/
> >>> > 5.4% drivers/usb/
> >>> > 4.0% drivers/watchdog/
> >>> > 16.0% drivers/
> >>> > 3.5% fs/
> >>> >
> >>> > yeah, the bulk of it is all config updates, and with arm and powerpc
> >>> > leading the pack.
> >>>
> >>> Doesn't boot on my quad core test box, apparently because of an AHCI failure.
> >>>
> >>> Bisecting ...
> >>
> >> Bisection turned up commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd as the culprit:
> >>
> >> commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd
> >> Author: Yinghai Lu <yhlu.kernel@gmail.com>
> >> Date: Mon Aug 25 00:56:08 2008 -0700
> >>
> >> x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3
> >>
> >> Reverting this commit helps.
>
> can you try tip/master? we have another fix according to Linus..

I have tested the patch that Linus sent me and it works. Please see my reply
to Linus for the link to the dmesg output.

Thanks,
Rafael