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SubjectRe: [PATCH] linux-2.5.69_clear-smi-fix_A1
On Mon, May 12, 2003 at 05:30:03PM -0700, john stultz wrote:

> I've been having problems with ACPI on a box here in our lab. Some of
> our more recent hardware requires that SMIs are routed through the
> IOAPIC, thus when we clear_IO_APIC() at boot time, we clear the BIOS
> initialized SMI pin. This basically clobbers the SMI so we can then
> never make the transition into ACPI mode.
> This patch simply reads the apic entry in clear_IO_APIC to make sure the
> delivery_mode isn't dest_SMI. If it is, we leave the apic entry alone
> and return.
> With this patch, the box boots and SMIs function properly.

There's a whole bunch of 'ACPI buggers up interrupt routing' bugs
in bugzilla right now, I wonder if this could help out with those.


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