From: "H. Peter Anvin" <hpa@zytor.com>
To: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Peter Hurley <peter@hurleysoftware.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
David Laight <David.Laight@ACULAB.COM>,
Jakub Jelinek <jakub@redhat.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
Tony Luck <tony.luck@intel.com>,
"linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>,
Oleg Nesterov <oleg@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Paul Mackerras <paulus@samba.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
Miroslav Franc <mfranc@redhat.com>,
Richard Henderson <rth@twiddle.net>,
linux-alpha@vger.kernel.org
Subject: Re: bit fields && data tearing
Date: Wed, 10 Sep 2014 13:18:06 -0700 [thread overview]
Message-ID: <5410B1FE.9090504@zytor.com> (raw)
In-Reply-To: <20140908185240.21f52ca0@alan.etchedpixels.co.uk>
On 09/08/2014 10:52 AM, One Thousand Gnomes wrote:
>
> I think the whole "removing Alpha EV5" support is basically bonkers. Just
> use set_bit in the tty layer. Alpha will continue to work as well as it
> always has done and you won't design out support for any future processor
> that turns out not to do byte aligned stores.
>
I think it's pretty safe to say such a processor is unlikely to ever be
created, for the same reason there weren't any 48-bit computers when
32-bit computers ran out of steam: it caused more problems than it
solved, and Alpha pretty much proved that. The engineering advantages
would have to be so overwhelmingly in favor for someone to want to walk
down that road again.
-hpa
next prev parent reply other threads:[~2014-09-10 20:18 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20140712181328.GA8738@redhat.com>
[not found] ` <54079B70.4050200@hurleysoftware.com>
[not found] ` <1409785893.30640.118.camel@pasglop>
[not found] ` <063D6719AE5E284EB5DD2968C1650D6D17487172@AcuExch.aculab.com>
[not found] ` <1409824374.4246.62.camel@pasglop>
[not found] ` <5408E458.3@zytor.com>
2014-09-05 0:59 ` bit fields && data tearing Peter Hurley
2014-09-05 2:08 ` H. Peter Anvin
2014-09-05 15:31 ` Peter Hurley
2014-09-05 15:41 ` H. Peter Anvin
2014-09-08 17:52 ` One Thousand Gnomes
2014-09-08 17:59 ` H. Peter Anvin
2014-09-08 19:17 ` One Thousand Gnomes
2014-09-09 11:18 ` Peter Hurley
2014-09-08 22:47 ` Peter Hurley
2014-09-09 1:59 ` Paul E. McKenney
2014-09-09 11:14 ` Peter Hurley
2014-09-11 10:04 ` One Thousand Gnomes
2014-09-11 16:16 ` Paul E. McKenney
2014-09-11 20:01 ` Peter Hurley
2014-09-14 23:24 ` One Thousand Gnomes
2014-09-22 19:51 ` Paul E. McKenney
2014-09-23 18:19 ` Peter Hurley
2014-09-23 18:39 ` One Thousand Gnomes
2014-09-08 18:13 ` James Bottomley
2014-09-10 20:18 ` H. Peter Anvin [this message]
2014-09-10 21:10 ` Rob Landley
2014-09-05 2:08 ` H. Peter Anvin
2014-09-05 8:16 ` Michael Cree
2014-09-05 18:09 ` Paul E. McKenney
2014-09-05 18:31 ` Paul E. McKenney
2014-09-05 19:52 ` Peter Zijlstra
2014-09-05 20:01 ` Peter Hurley
2014-09-05 20:12 ` Peter Zijlstra
2014-09-05 20:15 ` H. Peter Anvin
2014-09-05 20:19 ` Paul E. McKenney
2014-09-05 18:50 ` Peter Hurley
2014-09-05 19:05 ` Paul E. McKenney
2014-09-05 19:24 ` Peter Hurley
2014-09-05 20:09 ` Paul E. McKenney
2014-09-05 19:38 ` Marc Gauthier
2014-09-05 20:14 ` Peter Hurley
2014-09-05 20:34 ` H. Peter Anvin
2014-09-05 20:42 ` Michael Cree
2014-09-05 20:43 ` Paul E. McKenney
2014-09-05 20:48 ` Thomas Gleixner
2014-09-05 21:05 ` Paul E. McKenney
2014-09-05 20:39 ` Michael Cree
2014-09-05 21:12 ` Peter Hurley
2014-09-05 21:27 ` Michael Cree
2014-09-05 20:42 ` Paul E. McKenney
[not found] ` <21512.10628.412205.873477@gargle.gargle.HOWL>
[not found] ` <20140904090952.GW17454@tucnak.redhat.com>
[not found] ` <540859EC.5000407@hurleysoftware.com>
[not found] ` <20140904175044.4697aee4@alan.etchedpixels.co.uk>
[not found] ` <5408C0AB.6050801@hurleysoftware.com>
[not found] ` <5408E4A3.2060303@zytor.com>
[not found] ` <20140905001751.GL5001@linux.vnet.ibm.com>
2014-09-05 1:57 ` Peter Hurley
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