Re: [PATCH 3/3] x86: when acpi_noirq is set, use mptable instead of MADT

[Len Brown]

"acpi=noirq" and "pci=noacpi" are not reliable in IOAPIC mode --
as, by definition, they skip the processing of the ACPI interrupt itself.
On some systems this happens to work, and on some systems it doesn't --
depends on if there was an override for the SCI or if it appears as
a standard PCI interrupt.

So the bigger question is why you need these workarounds in the first place.

-Len



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