SMP/UP kernel S01E02

Matthew Dillon dillon at
Mon Mar 26 07:26:51 PDT 2007

:You can use the LAPIC and IOAPIC(s) on UP hardware as well.
:>     At the moment only one or the other can be included.  It would not 
:>     take a whole lot of work to allow both to be included, then figure out
:>     which one to use at run time during early boot.
:>     To do this, the MachIntrABI structure needs to be declared generically
:>     and then loaded with either the icu or the apic ABI.  Right now the
:>     structure is declared in the icu and the apic code (so only one can be
:>     included).
:So this won't be necessary :).
:         Thomas E. Spanjaard

    Only newer cpus have APICs and IOAPICs regardless of whether they
    are SMP-capable or not.  Older ones do not.


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