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Date: Mon, 11 Jun 2007 17:27:47 -0700 From: Chris Wright <chrisw@...s-sol.org> To: Thomas Gleixner <tglx@...utronix.de> Cc: LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...l.org>, Greg KH <greg@...ah.com>, Dmitry Torokhov <dmitry.torokhov@...il.com>, Andi Kleen <ak@...e.de>, Ralf Baechle <ralf@...ux-mips.org>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Ingo Molnar <mingo@...e.hu>, Stable Team <stable@...nel.org>, Richard Henderson <rth@...ddle.net> Subject: Re: [stable] [PATCH] INPUT: Sanitize PIT locking in pcspkr * Thomas Gleixner (tglx@...utronix.de) wrote: > The PC-speaker code has a quite creative method to serialize access to > the PIT: It uses a local lock. > > On i386 and x86_64 the access to the PIT is serialized by a lock in the > architecture code. The separate locking in the PC-speaker code ignores > the global lock and creates a nasty race between the PC-speaker and the > PIT clock source / events code on SMP machines. > > Use the global i8253_lock instead of the local i8253_beep_lock, when > compiled for i386/x86_64. Seems this one got lost? thanks, -chris - 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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