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Date: Mon, 2 Mar 2009 10:28:41 -0800 From: Arjan van de Ven <arjan@...radead.org> To: Masami Hiramatsu <mhiramat@...hat.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>, Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...ux-foundation.org>, Nick Piggin <npiggin@...e.de>, Steven Rostedt <rostedt@...dmis.org>, Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>, Frederic Weisbecker <fweisbec@...il.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Rusty Russell <rusty@...tcorp.com.au>, "H. Peter Anvin" <hpa@...or.com>, Steven Rostedt <srostedt@...hat.com> Subject: Re: [RFC][PATCH] x86: make text_poke() atomic > > Use map_vm_area() instead of vmap() in text_poke() for avoiding page > allocation and delayed unmapping, and call vunmap_page_range() and > local_flush_tlb() directly because this mapping is temporary and > local. > > At the result of above change, text_poke() becomes atomic and can be > called from stop_machine() etc. .... but text_poke() realistically needs to call stop_machine() since you can't poke live code.... so that makes me wonder how useful this is... -- 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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