New interrupt stuff breaks ASUS 2 CPU system

John Baldwin jhb at
Tue Nov 4 07:38:38 PST 2003

On 04-Nov-2003 Harti Brandt wrote:
> Hi,
> I have an ASUS system with 2 CPUs that I need to run at HZ=10000. This
> worked until yesterday, but with the new interrupt code it doesn't boot
> anymore. It works for the standard HZ, but if I set HZ=1000 I get a double
> fault. I suspect a race condition in the interrupt handling. My config
> file has
> options SMP
> device apic
> options HZ=1000

Ok, I can try to reproduce.

> Device configuration finished.
> Timecounter "TSC" frequency 1380009492 Hz quality -100
> Timecounters cpuid = 0; apic id = 00
> instruction pointer   = 0x8:0xc048995d
> stack pointer         = 0x10:0xc0821bf4
> frame pointer        cpuid = 0; apic id = 00
> 0xc048995d is in critical_exit. It is the jmp after the popf from
> cpu_critical_exit.

This is where interrupts are re-enabled, so you are getting an interrupt.
It might be helpful to figure what type of fault you are actually getting.


John Baldwin <jhb at>  <><
"Power Users Use the Power to Serve!"  -

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