Re: ULE status, invalid load, buildkernel times.

On Sunday 29 July 2007, Peter Wemm wrote:
> On Friday 27 July 2007, Milos Vyletel wrote:
> > On Fri, Jul 27, 2007 at 09:26:40AM -0400, Kris Kennaway wrote:
> > > On Fri, Jul 27, 2007 at 09:48:32AM +0200, Milos Vyletel wrote:
> > > > On Thu, Jul 26, 2007 at 06:06:20PM -0700, Peter Wemm wrote:
> > > > > The other option is to find the kernel.debug for this crash,
> > > > > and do this:
> > > > > kgdb kernel.debug
> > > > > gdb>  l *0xffffffff8033953c
> > > > > This will tell us the file and line number that the crash
> > > > > happened in. There is no need to reboot for this unless you
> > > > > no longer have a crashing kernel.
> > > >
> > > > I've played with this a little while, and after turning
> > > > INVARIANTS on, it paniced in lapic_ipi_raw() on the
> > > > KASSERT(lapic != NULL, ("%s called too early", __func__));
> > > >
> > > > so I assume, that this function was called before lapic_init(),
> > > > where lapic is initialized, which is wrong.
> > > >
> > > > It was clean current kernel with no other patches, now I don't
> > > > have local access to that machine so I can test it in few days.
> > > >
> > > > btw. how can one get trace in text form, I mean syslog stop
> > > > after panic and all I got logged is that it paniced. Anything I
> > > > type in db> is lost. I know that this can be done by remote
> > > > gdb, but unfortunatelly this isn't possible.
> > >
> > > If you trigger a dump (call doadump) then some amount of the DDB
> > > session will usually be saved with the dump and displayed by
> > > kgdb.
> >
> > Yes, I forgot about that. I have zfs swap partition and I can't
> > configure my dumpdev. Have anyone succesfully acomplish this?
>
> Please abandon the original patch and try this one:

Whoa!!!!  I may have crossed threads here.  No, do NOT abandon Jeff's 
patch.  I was talking about:  http://rulez.sk/~mv/cpu.patch  - revert 
that one and try the one just below.  Just to be clear. :)

> http://people.freebsd.org/~peter/topology.diff
>
> This should fix it once and for all.  I have tested it on amd64.  I
> have compile tested on i386 (an old laptop), but not booted it on an
> i386 smp box - I dont have one.
>
> As such, I'd very much appreciate any confirmation from i386 users
> that it works.  Both from HTT and non-HTT users.  Please check that
> sysctl kern.sched.topology is right.  On an Athlon64 X2 or dual-core
> opteron, it should be "0".  A HTT p4 or xeon should be non-zero.  It
> should be the same in both i386 and amd64 mode.



-- 
Peter Wemm - peter_at_wemm.org; peter_at_FreeBSD.org; peter_at_yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5