From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from imx9.toshiba.co.jp (imx9.toshiba.co.jp [202.33.96.51]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 7746B679E1 for ; Fri, 11 Aug 2006 14:06:05 +1000 (EST) Received: from imx11.toshiba.co.jp (imx11 [61.202.160.20]) by imx9.toshiba.co.jp with ESMTP id k7B21gdI029214 for ; Fri, 11 Aug 2006 11:01:50 +0900 (JST) Date: Fri, 11 Aug 2006 11:01:23 +0900 Message-ID: From: Tsutomu OWA To: linux-kernel@vger.kernel.org Subject: [RFC PATCH 0/4] powerpc 2.6.16-rt17: to port rt patch to powerpc MIME-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi") Content-Type: text/plain; charset=US-ASCII Cc: linuxppc-dev@ozlabs.org, mingo@elte.hu, tglx@linutronix.de List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi, I'm trying to port realtime-preempt patch to powerpc. The primary purpose to post an experimental work is for review and to see if I'm on the right track. The same material is placed on CE Linux Forum's wiki page; http://tree.celinuxforum.org/CelfPubWiki/RTPatchForPowerPC This series of patches adds support to make rt patch work on powerpc64 targets. Currently two platforms (powermac and cell) are tested. These patches apply to 2.6.16 kernel with realtime preempt patch (patch-2.6.16-rt17) by Ingo Molnar at http://people.redhat.com/mingo/realtime-preempt/. Compile tested for both powermac and cell w/ and w/o PREEMPT_RT. Boot tested for powermac w/ and w/o PREEMPT_RT on a Dual Power Mac G5. (boots on initrd and CONFIG_BLK_DEV_IDE_PMAC is disabled (or with a work around included in the patch) for PREEMPT_RT, see *1). Boot tested for cell w/ and w/o PREEMPT_RT on the systemsim simulator provided by IBM. Note that "iommu=off" command line option is applied. [RFC PATCH 1/4] powerpc 2.6.16-rt17: to build on powerpc w/ RT [RFC PATCH 2/4] powerpc 2.6.16-rt17: to boot on powerpc w/ RT [RFC PATCH 3/4] powerpc 2.6.16-rt17: to support CONFIG_MCOUNT [RFC PATCH 4/4] powerpc 2.6.16-rt29: to fix network driver (workaround) These patches are provided under GNU GPL. Comments and suggestions are welcome. Thanks in advance. *1: There seem to be some flaw(s) which make(s) some devices unavailable (namely a cdrom drive and a SATA drive so far) when PREEMPT_HARDIRQS is enabled. "hda: lost interrupt" and/or "ata1: command 0x50 host_stat 0x4" show up. Other devices such as network, keyboard etc. seem to work fine. I've looked into this for a couple of weeks in vain. -- owa Software Engineering Center, TOSHIBA.