[issue714] SMP kernel panic at boot: assertion: ((int)sr->sysid ..

Matthew Dillon dillon at apollo.backplane.com
Sun Jul 1 18:54:50 PDT 2007

:Thomas Nikolajsen <thomas.nikolajsen at mail.dk> added the comment:
:DDB trace uploaded in file .3; symbols weren't set up yet (early in boot),
:so I used 'nm -n' on kernel and added symbols to trace myself.
:perfmon popped up; after removing that from my KERNCONF problem isn't seen.
:For a solution we could just use MAXCPU rounded up to nearest power of 2,
:to add to gd_sysref_alloc to generate new sysid (instead of adding ncpus).
:It will give fewer sysids than current scheme with ncpus << MAXCPU,
:but MAXCPU has to be supported anyway.
: -thomas

    This is easy. It's due to PERFMON trying to initialize its devices
    way, way too early.

    Fix coming up in a sec.


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