Re: IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH]

From: Ian Kumlien
Date: Mon May 10 2004 - 11:07:08 EST

On Mon, 2004-05-10 at 17:05, Arjen Verweij wrote:
> Does the 2.6.6 Changelog section about nforce2 imply that Ross' Patches of
> Stability are no longer required? I don't read lkml regularely, so this
> would be new for me.

Do a grep for nforce and you'll find:
[PATCH] fixup for C1 Halt Disconnect problem on nForce2 chipsets

Based on information provided by "Allen Martin" <AMartin@xxxxxxxxxx>:

A hang is caused when the CPU generates a very fast CONNECT/HALT cycle
sequence. Workaround is to set the SYSTEM_IDLE_TIMEOUT to 80 ns.
This allows the state-machine and timer to return to a proper state within
80 ns of the CONNECT and probe appearing together. Since the CPU will not
issue another HALT within 80 ns of the initial HALT, the failure condition
is avoided.

[ACPI] workaround for nForce2 BIOS bug: XT-PIC timer in IOAPIC mode
"acpi_skip_timer_override" boot parameter
dmi_scan for common platforms, may be replaced with PCI-ID in future.

So it's only missing the patches that ross mentioned, it will still work
without em. (except for clock drift afair)

> Anyway, if this works (tm) I am very happy. Will attempt to test it later
> on, even though I have Maxtor 8MB discs :)

Ian Kumlien <pomac () vapor ! com> --

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