From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4808A1C7.7000907@windriver.com> Date: Fri, 18 Apr 2008 08:27:35 -0500 From: Jason Wessel MIME-Version: 1.0 Subject: Re: 2.6.25-mm1: not looking good References: <20080417160331.b4729f0c.akpm@linux-foundation.org> <20080417164034.e406ef53.akpm@linux-foundation.org> <20080417171413.6f8458e4.akpm@linux-foundation.org> <48080FE7.1070400@windriver.com> <20080418073732.GA22724@elte.hu> <19f34abd0804180446u2d6f17damf391a8c0584358b8@mail.gmail.com> <20080418123439.GA17013@elte.hu> <19f34abd0804180541l7b4d14a6tb13bdd51dd533d70@mail.gmail.com> <48089BCA.1090704@windriver.com> <19f34abd0804180622l4f89191cp4cc7833822e058f5@mail.gmail.com> In-Reply-To: <19f34abd0804180622l4f89191cp4cc7833822e058f5@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Vegard Nossum Cc: Ingo Molnar , Andrew Morton , tglx@linutronix.de, penberg@cs.helsinki.fi, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, jmorris@namei.org, sds@tycho.nsa.gov List-ID: Vegard Nossum wrote: > On Fri, Apr 18, 2008 at 3:02 PM, Jason Wessel > wrote: > >> Vegard Nossum wrote: >> > On Fri, Apr 18, 2008 at 2:34 PM, Ingo Molnar wrote: >> > >> >> * Vegard Nossum wrote: >> >> >> >> > With the patch below, it seems 100% reproducible to me (7 out of 7 >> >> > bootups hung). >> >> > >> >> > The number of loops it could do before hanging were, in order: 697, >> >> > 898, 237, 55, 45, 92, 59 >> >> >> >> cool! Jason: i think that particular self-test should be repeated 1000 >> >> times before reporting success ;-) >> >> >> > >> > BTW, I just tested a 32-bit config and it hung after 55 iterations as well. >> > >> > Vegard >> > >> > >> > >> I assume this was SMP? >> > > Yes. But now that I realize this, I tried running same kernel with > qemu, using -smp 16, and it seems to be stuck here: > > Unless you have a qemu with the NMI patches, kgdb does not work on SMP with qemu. The very first test is going to fail because the IPI sent by the kernel is not handled in qemu's hardware emulation. Jason. -- 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: email@kvack.org