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Date:      Sat, 14 Jul 2001 17:03:24 -0700 (PDT)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Matt Jacob <mjacob@FreeBSD.org>
Cc:        cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
Subject:   RE: cvs commit: src/sys/alpha/alpha machdep.c mp_machdep.c vm_ma
Message-ID:  <XFMail.010714170324.jhb@FreeBSD.org>
In-Reply-To: <200107142137.f6ELbwT56088@freefall.freebsd.org>

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On 14-Jul-01 Matt Jacob wrote:
> mjacob      2001/07/14 14:37:58 PDT
> 
>   Modified files:
>     sys/alpha/alpha      machdep.c mp_machdep.c vm_machdep.c 
>     sys/alpha/include    smp.h 
>   Log:
>   Fix reboot hangs that have happened with multiple processors
>   on Alpha 4100s.
>   
>   Basically, if you're halting or you're rebooting, you should
>   tell all other processors to halt first. Define IPI_HALT- IPI_STOP
>   is not what we want for this purpose, which will call prom_halt(0)
>   on receipt.
>   
>   The processor running the halt or reboot wil send an IPI_HALT to all
>   other processors, delay a bit, then continue to do what what it was
>   planning on doing (prom_halt({0|1})).

Are you sure we don't need to do the "real" halt on the boot processor like we
have to do on the x86?

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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