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IF=0 and IPIs
Posted: Sun Aug 22, 2004 6:23 am
by kataklinger
What happen to IPIs when Interrupt Flag is 0?
Are they also masked?
Re:IF=0 and IPIs
Posted: Sun Aug 22, 2004 6:58 am
by Pype.Clicker
i suppose so ... The Intel manuals should tell ...
Re:IF=0 and IPIs
Posted: Sun Aug 22, 2004 7:12 am
by Brendan
Hi,
kataklinger wrote:
What happen to IPIs when Interrupt Flag is 0?
Are they also masked?
The IPIs behave like an IRQ when the interrupts are disabled.
The only interrupts that the IF flag doesn't control are exceptions, NMIs, SMIs, STARUP IPIs, INIT IPIs (both assert and d-assert) and ExtINT.
Cheers,
Brendan