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Date:      Mon, 28 Nov 2005 15:27:40 -0500
From:      John Baldwin <jhb@freebsd.org>
To:        src-committers@freebsd.org
Cc:        cvs-src@freebsd.org, cvs-all@freebsd.org
Subject:   Re: cvs commit: src/sys/amd64/amd64 machdep.c
Message-ID:  <200511281527.41530.jhb@freebsd.org>
In-Reply-To: <200511211839.jALIdIff064683@repoman.freebsd.org>
References:  <200511211839.jALIdIff064683@repoman.freebsd.org>

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On Monday 21 November 2005 01:39 pm, John Baldwin wrote:
> jhb         2005-11-21 18:39:17 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/amd64/amd64      machdep.c
>   Log:
>   Expand the hack to mask the atpics if 'device atpic' is not in the kernel
>   during boot up.  Now we do a full reset of the 8259As and setup a simple
>   interrupt handler (we actually borrow the apic one that just does an
>   immediate iret) to handle any spurious interrupts triggered by either
> chip. This should fix some folks that were getting a Trap 30 during bootup
> of certain SMP AMD systems.  This might get pushed into the 6.0 branch as
> an errata.  For now a suitable workaround is to add 'device atpic' to your
> kernel config.
>
>   Tested by:      scottl
>   Helpful info from:      dillon
>   MFC after:      1 week

Hmm, we probably still need to reprogram the ATPIC on resume as well.  I'm not 
sure it's actually worth not just compiling the atpic code in on amd64.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org



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