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Message-ID: <Pine.LNX.4.58.0804091906040.31970@gandalf.stny.rr.com> Date: Wed, 9 Apr 2008 19:51:12 -0400 (EDT) From: Steven Rostedt <rostedt@...dmis.org> To: LKML <linux-kernel@...r.kernel.org> cc: Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>, Linus Torvalds <torvalds@...ux-foundation.org>, akpm@...l.org, Rusty Russell <rusty@...tcorp.com.au>, Glauber de Oliveira Costa <gcosta@...hat.com>, Jan Beulich <jbeulich@...ell.com>, Andi Kleen <ak@...e.de>, Thomas Gleixner <tglx@...utronix.de>, pinskia@....gnu.org Subject: Re: [PATCH] pop previous section in alternative.c On Wed, 9 Apr 2008, Steven Rostedt wrote: > > gcc expects all toplevel assembly to return to the original section type. > The code in alteranative.c does not do this. This caused some strange bugs > in sched-devel where code would end up in the .rodata section and when > the kernel sets the NX bit on all .rodata, the kernel would crash when > executing this code. > > This patch adds a .previous marker to return the code back to the > original section. > Oh, and this would not be complete without giving Andrew Pinski complete credit for telling me it wasn't a gcc bug but a bug in the toplevel asm code in the kernel. ;-) -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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