On Tue, 21 Nov 2000, Alan Cox wrote:
> Quite a few dual pentium socket 7 boards report dual cpu and apic in the
> MP table regardless of the capabilities of the CPU installed. Its apparently
> legal to do so. There is an apic capability flag that should be tested before
It's not legal -- the MPS is very explicit the MP-table must reflect a
real configuration.
> making any assumptions about APIC availability on a processor.
OK, but how does it handle the 82489DX? There are valid configurations
using this kind of APIC, including Pentium P54C ones...
> And yes some boards crash otherwise.
Hmm, the only solution I can see is to check the APIC version in the
MP-table and only if an integrated version is reported then check
capabilities. But can we trust the version reported given that amount of
brokenness out there?
Maciej
-- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Nov 23 2000 - 21:00:21 EST