From owner-freebsd-current@FreeBSD.ORG Mon Jul 2 14:57:16 2007 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A43CA16A476 for ; Mon, 2 Jul 2007 14:57:16 +0000 (UTC) (envelope-from ssouhlal@FreeBSD.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.freebsd.org (Postfix) with ESMTP id 929F513C447 for ; Mon, 2 Jul 2007 14:57:16 +0000 (UTC) (envelope-from ssouhlal@FreeBSD.org) Received: from [192.168.0.97] (c-76-21-32-5.hsd1.ca.comcast.net [76.21.32.5]) by elvis.mu.org (Postfix) with ESMTP id 72CC71A3C1A; Mon, 2 Jul 2007 07:57:16 -0700 (PDT) In-Reply-To: <4688EBC2.8070703@ybb.ne.jp> References: <46806B3E.2060701@FreeBSD.org> <4688EBC2.8070703@ybb.ne.jp> Mime-Version: 1.0 (Apple Message framework v752.3) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <27D8F2CD-156E-4962-A187-63E42CAE2B6F@FreeBSD.org> Content-Transfer-Encoding: 7bit From: Suleiman Souhlal Date: Mon, 2 Jul 2007 07:57:06 -0700 To: Takeharu KATO X-Mailer: Apple Mail (2.752.3) Cc: current@freebsd.org Subject: Re: [PATCH] Machine Check Architecture on amd64 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Jul 2007 14:57:16 -0000 On Jul 2, 2007, at 5:12 AM, Takeharu KATO wrote: > Hi, Souhlal > >> I would appreciate it if someone would try this, especially if you >> have Intel machines with bad RAM. >> Comments are welcome. > > Apparently, the patch does not have memory scrub facility. > Do you have a plan to implement the memory scrub facility like > solaris does? > > P.S. In fact, I was also trying to implement the MCE facility, so I > am interesting to > your patch. While I don't know about Intel CPUs, K8 CPUs from AMD have a hardware DRAM/data cache scrubber, so I didn't bother implementing it, and I don't really plan to, at least in the near future. It should, however, be pretty easy to implement. -- Suleiman