From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 29 Oct 2008 01:29:29 +0000 (GMT) Received: from h4.dl5rb.org.uk ([81.2.74.4]:54925 "EHLO ditditdahdahdah-dahdahdahditdit.dl5rb.org.uk") by ftp.linux-mips.org with ESMTP id S22617978AbYJ2B3Q (ORCPT ); Wed, 29 Oct 2008 01:29:16 +0000 Received: from denk.linux-mips.net (denk.linux-mips.net [127.0.0.1]) by ditditdahdahdah-dahdahdahditdit.dl5rb.org.uk (8.14.2/8.14.1) with ESMTP id m9T1TC1w013364; Wed, 29 Oct 2008 01:29:12 GMT Received: (from ralf@localhost) by denk.linux-mips.net (8.14.2/8.14.2/Submit) id m9T1TBJ0013362; Wed, 29 Oct 2008 01:29:11 GMT Date: Wed, 29 Oct 2008 01:29:11 +0000 From: Ralf Baechle To: David Daney Cc: linux-mips@linux-mips.org, Tomaso Paoletti , Paul Gortmaker Subject: Re: [PATCH 02/36] Add Cavium OCTEON files to arch/mips/include/asm/mach-cavium-octeon Message-ID: <20081029012911.GA13328@linux-mips.org> References: <490655B6.4030406@caviumnetworks.com> <1225152181-3221-1-git-send-email-ddaney@caviumnetworks.com> <1225152181-3221-2-git-send-email-ddaney@caviumnetworks.com> <20081028075733.GB20858@linux-mips.org> <4907A586.40409@caviumnetworks.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4907A586.40409@caviumnetworks.com> User-Agent: Mutt/1.5.18 (2008-05-17) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 21070 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Tue, Oct 28, 2008 at 04:51:34PM -0700, David Daney wrote: >> It also means the resulting kernel won't have support for futex which >> essentially means you're cut off from modern libcs. >> >> It is possible to get this to work - but nobody bothered so far; ll/sc-less >> R2000 class processors are very rare these days. My recommendation is >> to keep cpu_has_llsc as 1 until you've fixed up the futex implementation, >> if you deciede so. > > Someone should tell ip32 w/ R5000 this. It seems that it is broken too. > > This could explain why my R5000 O2 does weird things with glibc 2.8... The R5000 has a hardware bug with LL/SC on XKPHYS addresses so we can't ... Ralf