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    SubjectRe: 2.6.19-rc5-mm1: HPC nx6325 breakage, VESA fb problem, md-raid problem
    On Fri, 10 Nov 2006 05:49:08 +0100
    Andi Kleen <ak@suse.de> wrote:

    >
    > > > >
    > > > > Well, I've got some data from earlyprintk (forgot I needed to boot with
    > > > > vga=normal).
    > > > >
    > > > > Unfortunately, I had to rewrite the trace manually:
    > > > >
    > > > > clear_IO_APIC_pin+0x15/0x6a
    > > > > try_apic_pin+0x7a/0x98
    > > > > setup_IO_APIC+0x600/0xb7a
    > > > > smp_prepare_cpus+0x33a/0x371
    > > > > init+0x60/0x32d
    > > > > child_rip+0xa/0x12
    > > > >
    > > > > [And then the unwinder said it got stuck.]
    > > > >
    > > > > RIP is reported to be at ioapic_read_entry+0x33/0x61,
    > > >
    > > > This is 100% reproducible on the nx6325 (but not on the other boxes) and
    > > > apparently caused by x86_64-mm-try-multiple-timer-pins.patch (doesn't
    > > > happen with this patch reverted).
    > >
    > > Thanks, dropped.
    >
    > can I have details please?

    I think what's in this thread is all you'll get.

    It would be nice to see the access address. I'd be guessing that it's
    trying to read the io-apic before we're ready to read it and io_apic_base()
    is returning gunk and boom.

    > On what system (CPU, motherboard, BIOS version) does the noidlehz stuff break?

    nx6325

    It's x86_64: no noidlehz.

    > And what did you drop exactly?

    x86_64-mm-try-multiple-timer-pins.patch
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