Linus Torvalds wrote:
In particular, I have this pretty strong memory that we tried to do
something like this a long time ago, and it caused problems at least
with the legacy ISA/ATA interrupts (irq 14/15).
On the other hand, my memory is pretty damn bad at times, and besides, I
hope that that "hardcoded" case just above it is the one that takes care
of the old ATA interrupts. This is one of those times when the only
guaranteed right thing to do would be to be bug-for-bug compatible with
whatever crud MS-Win does..
Many BIOS ACPI tables from years ago simply _assumed_ that you have
hardcoded irq 14/15, even... Their irq descriptors for 14/15 would be
absent or completely non-functional.
Or maybe its the $pirq table I'm recalling. One of the two, anyway.
Jeff
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