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    SubjectRe: [2.6.12] x86-64 IO-APIC + timer doesn't work
    On Saturday 18 Jun 2005 20:09, Andi Kleen wrote:
    > On Sat, Jun 18, 2005 at 02:52:52PM +0100, Alistair John Strachan wrote:
    > > Hi,
    > >
    > > I upgraded my nForce3 x86-64 desktop from 2.6.12-rc5 to 2.6.12 today and
    > > something strange started happening. Waay back in 2.6.x I had problems
    > > with the "noapic" default for nForce boards on x86-64, and so used the
    > > "apic" kernel boot parameter to force the apic on; this worked
    > > successfully for a long time with no timer problems.
    > apic hasn't been needed for several kernel releases now, since the
    > timer override problem on the Nforce has been workarounded.

    I figured it out. This workaround has only just been enabled on my board since
    I updated my BIOS from the 1.6 to 1.7 revision. Clearly the workaround's
    "detection" isn't sufficiently vigorous. I can demonstrate 2.6.12
    mis-detecting my nForce3 board with the 1.6 BIOS, and correctly enabling the
    workaround with the 1.7 BIOS.

    It's probably not worth fixing, but it might be a useful datapoint in future
    (make sure people with MSI MS-7030 boards update their BIOS).


    personal: alistair()devzero!co!uk
    university: s0348365()sms!ed!ac!uk
    student: CS/CSim Undergraduate
    contact: 1F2 55 South Clerk Street,
    Edinburgh. EH8 9PP.
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