On Thu, 3 May 2001, Alan Cox wrote on APIC problems in 2.4:
> There are five cases I am seeing
> 1. Serverworks total APIC hose ups.
> Fix: remove OSB4 or use -ac tree
> 2. 440BX and similar boards losing interrupts on some drivers
> Fix: use -ac
> 3. APIC errors notably checksum errors.
> Fix: buy properly manufactured hardware
> 4. Hangs on boot with the CUV4XD and a couple of other boards.
> Still a mystery
> 5. Incorrect PCI IRQ routing
> Fix: Mostly get a board with a correct BIOS. There are a couple of
> cases people are looking at - some are fixed in 2.4.4 and -ac
> where magic IRQ lines are not visible directly in PCI space
Doesn't 2.4.1-ac1 onwards contain:
o Workaround code for APIC problems with ne2k (Maciej Rozycki)
| this will break original 82489DX devices for now
| ie _very_ early dual pentium boards
Got good reviews at the time, and I thought it was more general than
ne2k. I don't remember it going forward to Linus (but I've not looked).
Hugh
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