Messages in this thread | | | Date | Tue, 9 Nov 1999 08:22:06 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: linux interrupt handling problem |
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On Tue, 9 Nov 1999, Alan Cox wrote: > > I can find no requirement that sti() in interrupts actually does anything. > It seems quite permissible for it to be a non inside of an IRQ handler or > to only lower the level to the current irq level
That is in fact what Linux/SMP does in various situations: a "sti()" in an interrupt handler on SMP/i386 will be just a "local" sti(), while ir in normal situations will be a "global" sti().
Linus
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