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Message-Id: <200807292017.42005.nickpiggin@yahoo.com.au> Date: Tue, 29 Jul 2008 20:17:41 +1000 From: Nick Piggin <nickpiggin@...oo.com.au> To: Peter Zijlstra <peterz@...radead.org> Cc: Ingo Molnar <mingo@...e.hu>, Jeremy Fitzhardinge <jeremy@...p.org>, Jens Axboe <jens.axboe@...cle.com>, Andi Kleen <ak@...e.de>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: x86: Is there still value in having a special tlb flush IPI vector? On Tuesday 29 July 2008 20:04, Peter Zijlstra wrote: > On Tue, 2008-07-29 at 20:00 +1000, Nick Piggin wrote: > > On Tuesday 29 July 2008 19:54, Peter Zijlstra wrote: > > > On Tue, 2008-07-29 at 14:30 +1000, Nick Piggin wrote: > > > > Not to mention the minor problem that it still deadlocks when called > > > > with interrupts disabled ;) > > > > > > __smp_call_function_single has potential though.. > > > > For reschedule interrupt? I don't really agree. > > Not specifically, for not deadlocking from irq-off, more so. Oh, well yes it already does work from irq-off, so it has already realised its potential :) Not sure exactly what kinds of users it is going to attract, but it should be interesting to see! -- 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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