From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 19 Nov 2003 17:09:28 -0600 From: Matt Mackall Subject: Re: [PATCH][2.6-mm] Fix 4G/4G X11/vm86 oops Message-ID: <20031119230928.GE22139@waste.org> References: <20031119203210.GC22139@waste.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031119203210.GC22139@waste.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: Zwane Mwaikambo , Ingo Molnar , "Martin J. Bligh" , Andrew Morton , Linux Kernel , linux-mm@kvack.org, Hugh Dickins List-ID: On Wed, Nov 19, 2003 at 02:32:10PM -0600, Matt Mackall wrote: > > Zwane's got a K6-2 500MHz. I've just managed to reproduce this on my > 1.4GHz Opteron box (with Debian gcc 3.2). Here, the "ooh la la" bit > doesn't help. So my suspicion is that the printk is changing the > timing just enough on Zwane's box that he's getting a timer interrupt > knocking him out of vm86 mode before he hits a fatal bit in the fault > handling path for 4/4. Printks in handle_vm86_trap, handle_vm86_fault, > do_trap:vm86_trap, and do_general_protection:gp_in_vm86 never fire so > there's probably something amiss in the trampoline code. Some more datapoints: CPU distro compiler video X result K6-2/500 connectiva 9 2.96 trident 4.3 reboot (zwane) K6-2/500 connectiva 9 3.2.2 trident 4.3 reboot (zwane) Opteron 240 debian unstable 3.2 S3 4.2.1 reboot Athlon 2100 debian unstable 3.2 radeon 7500 4.2.1 works P4M 1800 debian unstable 3.2 radeon m7 4.2.1 reboot -- Matt Mackall : http://www.selenic.com : Linux development and consulting -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org