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    SubjectRe: [Bug 8136] 2.6.21-rc2-mm2 won't boot
    Date
    On Wednesday, 7 March 2007 01:32, Rafael J. Wysocki wrote:
    > Hi,
    >
    > On Wednesday, 7 March 2007 01:15, Andrew Morton wrote:
    > > On Tue, 6 Mar 2007 15:36:29 -0800
    > > bugme-daemon@bugzilla.kernel.org wrote:
    > >
    > > > http://bugzilla.kernel.org/show_bug.cgi?id=8136
    > > >
    > >
    > > Let's take this to email.
    > >
    > > >
    > > >
    > > >
    > > > ------- Additional Comments From Nicolas.Mailhot@LaPoste.net 2007-03-06 15:36 -------
    > > > Created an attachment (id=10631)
    > > > --> (http://bugzilla.kernel.org/attachment.cgi?id=10631&action=view)
    > > > Printscreen with vesfg disabled and earlyprintk=vga
    > > >
    > >
    > > So rc2-mm2 panics due to "MP-BIOS bug: 8254 timer not connected to IO-APIC" and
    > > rc2-mm1 does not.
    >
    > I'm observing a similar thing on my dual-core AMD64 testbed desktop. Still,
    > another dual-core AMD64 machine I have runs -rc2-mm2 just fine.
    >
    > One of the differences between them is that the failing one uses gcc 4.1.0 (sigh).
    >
    > > Could be ACPI, could be x86_64 timer changes, could be something else.
    > >
    > > Would you have time to bisect it?
    > > http://www.zip.com.au/~akpm/linux/patches/stuff/bisecting-mm-trees.txt
    > > explains how.
    > >
    > > If so, I'd suggest you drill in on the patches between
    > > x86_64-mm-defconfig-update.patch and
    > > optimize-and-simplify-get_cycles_sync.patch: the x86 changes.
    >
    > I'll try to debug it tomorrow.

    OK, this seems to be fixed in 2.6.21-rc3-mm2.
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