On Sat, Apr 09, 2005 at 03:46:12PM -0700, David S. Miller wrote:
> On Sat, 09 Apr 2005 19:22:23 +1000
> Benjamin Herrenschmidt <[email protected]> wrote:
>
> > ppc64 already has a local_irq_save/restore in switch_to, around the low
> > level asm bits, so it should be fine.
>
> Sparc64 essentially does as well. In fact, it uses an IRQ disable
> which is stronger than local_irq_save in that it disables reception
> of CPU cross-calls as well.
Alpha does the switch in PALmode, which is never interruptable.
r~
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