Re: [patch] x86, apic: use 0x20 for the IRQ_MOVE_CLEANUP_VECTOR insteadof 0x1f

[H. Peter Anvin]

On 01/11/2010 03:00 PM, Eric W. Biederman wrote:
>>
>> In irqinit.c, we statically pre-assign the per-cpu vector to irq
>> mappings (vector_irq) for all the legacy IRQ vectors. Similarly irq_cfg
>> is statically initialized for legacy IRQ's in io_apic.c. So we won't be
>> able to use this space for anything else.
> 
> Last I looked when we switched legacy irqs irqs from pic mode to io_apic mode
> we continue to use the same vector.
> 
> Which means we should not be wasting those vectors and that it is dangerous
> to play lowest priority irq games in that range.
> 

This statement made no sense to me?

	-hpa

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/