acpi interrupt storm when disabling, IPI hang
don at sandvine.com
Tue Jul 6 06:25:26 PDT 2004
From: Nate Lawson [mailto:nate at root.org]
> Don Bowman wrote:
> > When i run 'acpiconf -d', i get an interrupt storm on irq9...
> > vmstat -i shows ~1000/s.
> > Jun 15 13:41:33 cdata kernel: Interrupt storm detected on
> "irq9: acpi0";
> > throttling interrupt source
> > when i try to re-enable, i get an error:
> > # acpiconf -e
> > acpi0: interrupt handler already installed
> > ACPI-0210: *** Error: Unable to install System Control Interrupt
> > Handler, AE_ALREADY_EXISTS
> > acpiconf: enable failed: Device not configured
> > #
> > System is a Supermicro X5DPE motherboard, dual 2.8GHz Xeon,
> > 533MHz FSB, Intel e7501 chipset.
> Some systems don't support legacy mode (acpi disabled).
> Others support
> legacy mode but don't support transition back to it after
> acpi has been
> In this case, it's likely the flags aren't set right for
> AcpiEnableSubsystem. I'll look into it.
> > The system will not boot 5.x if acpi is disabled.
> > It will run 4.x without trouble tho.
> What do you mean by "will not boot"? Hangs? Panics? More
> info is needed.
It hangs during allocating PnP ISA I think. I have someone
who is looking into it now, a device ends up requesting -1 bytes.
He will post more info this week.
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