The NCR voyager architecture is essentially a precursor of the intel APIC one.
The Voyager systems support from one to eight "processor" slots which take
big cards with 1-4 486-686 processors. The difficulties for linux are mainly
that the Interrupts are delivered through the VIC architecture of 8 8259 PIC
dyads (so some processors accept interrupts and some don't); the 8259 dyads
are accessible only locally to the interrupt handling processor, so global
interrupt enable and disable becomes a difficult concept.
Since the architecture support depends fairly intimitely on the existing i386
code, I've slotted it into the i386 architecture directory rather than trying
to create a separate one.
The architecture was released publicly in March 2001 for both the 2.2 and 2.4
kernel series. It has a fairly small user base.
The diffs are ~151k, so I refer to them by URL rather than bunging up the
mailing list. The URL is
http://www.hansenpartnership.com/voyager/files/voyager-2.5.1.diff
All comments welcome.
James Bottomley
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This archive was generated by hypermail 2b29 : Sun Dec 23 2001 - 21:00:30 EST