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Date:      Sun, 13 Jun 2010 22:18:36 +0200
From:      Marius Strobl <marius@alchemy.franken.de>
To:        Andreas Tobler <andreast-list@fgznet.ch>
Cc:        freebsd-sparc64@freebsd.org
Subject:   Re: U60 doesn't boot anymore with -CURRENT
Message-ID:  <20100613201836.GC68288@alchemy.franken.de>
In-Reply-To: <4C1530F1.6070207@fgznet.ch>
References:  <4C14ED7C.2030809@fgznet.ch> <20100613191518.GA95797@alchemy.franken.de> <4C1530F1.6070207@fgznet.ch>

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On Sun, Jun 13, 2010 at 09:26:41PM +0200, Andreas Tobler wrote:
> On 13.06.10 21:15, Marius Strobl wrote:
> >On Sun, Jun 13, 2010 at 04:38:52PM +0200, Andreas Tobler wrote:
> >>Hi,
> >>
> >>my gecko testmachine refuses to boot with -CURRENT.
> >>
> >>Here the verbose part of the messages:
> >>
> >>---
> >>FreeBSD 9.0-CURRENT #0 r209123M: Sun Jun 13 14:07:28 CEST 2010
> >>
> >>     andreast@u60.andreas.nets:/usr/obj/export/devel/src/sys/GENERIC 
> >>     sparc64
> >>Preloaded elf kernel "/boot/kernel/kernel" at 0xc0bbc000.
> >>real memory  = 1610612736 (1536 MB)
> >>avail memory = 1554571264 (1482 MB)
> >>machine: SUNW,Ultra-60
> >>cpu0: Sun Microsystems UltraSparc-II Processor (449.99 MHz CPU)
> >>   mask=0xa0 maxtl=5 maxwin=7
> >>initalizing intr_countp
> >>---
> >>
> >>And here it hangs.
> >>
> >>Any idea on hwat is going wrong?
> >>
> >
> >Nothing obvious as no sparc64 specific changes went in lately.
> >If you use a kernel built with options ALT_BREAK_TO_DEBUGGER,
> >can you break into the debugger via the alternate break sequence
> >on the serial console and get backtrace when it hangs? What is
> >the last known working revision? Can you bisect which revsion
> >triggers the problem?
> 
> I tracked it down to r207537, especially mp_locore.S.
> If I use r207536 from mp_locore.S then my machine boots again.
> 

Ah, that revision fails to update one branch. Could you please
give the attached patch a try with current sources?

Marius




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