From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ludovic =?iso-8859-1?Q?Court=E8s?= Date: Wed, 05 Jul 2006 21:07:31 +0000 Subject: Re: [BUG sparc64] 2.6.16-git6 broke X11 on Ultra5 with ATI Mach64 Message-Id: <20060705210728.GC2347@cassis> List-Id: References: <200607031117.k63BHiDa007719@harpo.it.uu.se> In-Reply-To: <200607031117.k63BHiDa007719@harpo.it.uu.se> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: sparclinux@vger.kernel.org Hi, (Stripped `linux-kernel@'.) 2 days, 9 hours, 28 minutes, 40 seconds ago, Mikael Pettersson wrote: > In 2.6.17 sparc64 kernels, X11 runs _extremely_ slowly with > frequent lock-up like behaviour on my Ultra5 (ATI Mach64). > > I finally managed to trace the cause to this change in 2.6.16-git6: Can you be more specific as to which version of Xorg you are using? Several people including me have reported being unable to run Xorg 7.0 on ATI-based sparc64 machines such as U5s [0]. Symptoms include kernel hangs as well as transient [1,2] or permanent [3] filesystem corruptions. I just recompiled a kernel with your patch and it doesn't make any difference in that respect (besides, re-adding the `prot = __pgprot(...)' line looks questionable since the input value of PROT becomes unused as a result). Xorg 6.9, OTOH, was apparently working fine for most people. Thanks, Ludovic. [0] http://lists.debian.org/debian-sparc/2006/04/msg00096.html [1] http://lists.debian.org/debian-sparc/2006/05/msg00008.html [2] http://lists.debian.org/debian-sparc/2006/06/msg00112.html [3] http://lists.debian.org/debian-sparc/2006/06/msg00141.html