[DragonFlyBSD - Bug #1268] (Closed) need interrupt routing fallback/heuristic for broken MPtable

Antonio M. Huete Jimenez via Redmine bugtracker-admin at leaf.dragonflybsd.org
Wed Jan 23 16:05:06 PST 2013

Issue #1268 has been updated by tuxillo.

Status changed from Feedback to Closed

Agreed with caller to close this one.
Bug #1268: need interrupt routing fallback/heuristic for broken MPtable

Author: corecode
Status: Closed
Priority: Normal
Target version: 

It seems that many systems come with a broken MPtable.  For instance my machine
at work misses an entry for bus 4 (where my NIC is on), but instead contains an
entry for the non-existing bus 253.

One possible heuristic would be to assume that if there is one bus not mentioned
in the MPtable, but also one bus of the MPtable not existing in the system, that
this bus entry in the MPtable actually corresponds to the missing entry.  I am
not sure how good this might work though.

Alternatively, pci-pci bridges to buses which are not mentioned in the MPtable
could be treated as pci-pci bridges on physical slots, i.e. we could assume
intline round-robin.

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