From owner-freebsd-hackers Thu Jul 19 11:33:38 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from pike.osd.bsdi.com (pike.osd.bsdi.com [204.216.28.222]) by hub.freebsd.org (Postfix) with ESMTP id DD1F737B403 for ; Thu, 19 Jul 2001 11:33:31 -0700 (PDT) (envelope-from jhb@foo.osd.bsdi.com) Received: from foo.osd.bsdi.com (root@foo.osd.bsdi.com [204.216.28.137]) by pike.osd.bsdi.com (8.11.3/8.9.3) with ESMTP id f6JIXSF65287; Thu, 19 Jul 2001 11:33:28 -0700 (PDT) (envelope-from jhb@foo.osd.bsdi.com) Received: (from jhb@localhost) by foo.osd.bsdi.com (8.11.1/8.11.1) id f6JIXQw42095; Thu, 19 Jul 2001 11:33:26 -0700 (PDT) (envelope-from jhb) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <3B5692BC.77E9D994@mindspring.com> Date: Thu, 19 Jul 2001 11:33:26 -0700 (PDT) From: John Baldwin To: Terry Lambert Subject: Re: x86 unaligned access followup. Cc: Matthew Jacob , hackers@FreeBSD.ORG, kuehl@lgk.de Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 19-Jul-01 Terry Lambert wrote: > kuehl@lgk.de wrote: >> > A "shakedown cruise" could end up being very rough... you >> > would effectively need to check an "unaligned access in >> > kernel is OK" flag in many of these instances, and fall back >> > to doing the copy when it was false. >> >> ...therefore - never mind. >> Perhaps some app code may break. ;-) > > The point was that this code breaks on some architectures > supported by FreeBSD anyway, and moving at least some of > the pain onto x86 people would end up minimizing that > breakage. > > Right now, being able to make a bug break all architectures > equally looks pretty good to people having to keep up with > the x86 port of FreeBSD's rate of breakage of others, like > the Alpha, when people with just x86 hardware break things > without knowing it. It is very rare that the alpha port is broken as you describe. Sometimes a bug will have a different affect on the alpha than on x86, but except for bugs in sys/alpha that x86'ers won't be committing, very few of the bugs break just the alpha and not the x86 as well. -- John Baldwin -- 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/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message