[LinuxBIOS] More MCP55 hacking

Stefan Reinauer stepan at coresystems.de
Wed Dec 13 00:45:45 CET 2006


* Lu, Yinghai <yinghai.lu at amd.com> [061212 22:45]:
> For later AMD CPU, you could acpi for SRAT, SLIT..., plus irq routing in
> mptable.
> And not use DSDT for irq routing.
 
Are you certain that Linux reads PIRQ at all when it finds an
SRAT/SLIT/..? 

If you implement enough of ACPI to have Linux use the HPET timer, you
need all IRQ routing in ACPI as well. I had cases where Linux would use
the PIRQ/MP table values but never ever read a PIRQ/MP table since it
found a little bit of ACPI.

Stefan

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