Re: [RFC 1/3] Unified NMI delayed call mechanism

huang ying
2010-06-19T01:51:05Z

On Fri, Jun 18, 2010 at 11:31 PM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, 2010-06-18 at 23:16 +0800, huang ying wrote:
>>
>> soft_irq is a delayed mechanism for IRQ,
>
> No its not.

Why? What do you think soft_irq is for?

>>  a self interrupt can be a
>> delayed mechanism for NMI. If we can make soft_irq NMI-safe,
>
> No you can't.
>
>> we can
>> use soft_irq as a backup of self interrupt (for systems without APIC
>> and maybe for other architectures).
>
> Whatever would you want to do that for.

Best Regards,
Huang Ying