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Date:      Mon, 3 Apr 2006 11:52:25 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        "Conrad J. Sabatier" <conrads@cox.net>
Cc:        bms@spc.org, freebsd-current@freebsd.org
Subject:   Re: device atpic to be deprecated?
Message-ID:  <200604031152.27109.jhb@freebsd.org>
In-Reply-To: <20060402060734.0cc8fdd0.conrads@cox.net>
References:  <20060329020527.f8f087a4.conrads@cox.net> <200603291315.56671.jhb@freebsd.org> <20060402060734.0cc8fdd0.conrads@cox.net>

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On Sunday 02 April 2006 07:07, Conrad J. Sabatier wrote:
> On Wed, 29 Mar 2006 13:15:54 -0500
> John Baldwin <jhb@freebsd.org> wrote:
> > On Wednesday 29 March 2006 12:08, Scott Long wrote:
> > > John Baldwin wrote:
> > > > 
> > > > I think that once the lapic timer stuff was added almost all of the APIC
> > > > issues I was aware of went away on amd64 that were fixed by using device
> > > > atpic instead.  Most of the earlier problems were due to chipsets not
> > > > setting up pin 0 as extint, etc. but all that is no longer relevant when
> > > > we switched to using the lapic timer and stopped using irq0 and irq8 with
> > > > APIC.  This is the first I've heard since the lapic timer stuff that APIC
> > > > didn't work on an amd64 box, and device atpic has been off by default in
> > > > HEAD for quite a while now.  If we were able to require APIC on amd64, then
> > > > we might be able to try out some optimizations and other things I haven't
> > > > bothered with since they wouldn't be feasible on i386.
> > > > 
> > > 
> > > Fine, remove it.
> > 
> > I have to make sure it really works for everyone first though before
> > removing it would really be viable. :-/
> 
> So, would it be necessary to upgrade to HEAD in order to make sure that
> this problem won't still occur on my box?  Or has this stuff already
> been merged to STABLE?

This particular bunch of code is identical in HEAD and 6.x right
now, so we can probably debug it on STABLE just fine.

-- 
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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