Messages in this thread | | | Date | Thu, 23 Mar 2000 14:49:50 +0100 | From | Manfred Spraul <> | Subject | i8259 IRQ problems |
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I see "hda interrupt lost" messages when I boot with "nosmp", these messages never appear with io apic enabled.
Gigabyte-BXD board, new bios, not overclocked.
I checked the i8259/io_apic source:
1) why do we use 0x30 for the INVALIDATE_TLB_INTERRUPT? The interrupt is extremely time critical [another cpu waits for completion], and very short.
Shouldn't we use an interrupt with the highest io apic priority? [0xF0..0xFF]?
2) what's the correct order for the ACK's to both 8259A?
my reference book says first slave, then master
the linux code says first master, then slave.
Any known bugs in the 8259 code?
-- Manfred
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