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Message-ID: <20081104091956.GI23790@elte.hu> Date: Tue, 4 Nov 2008 10:19:56 +0100 From: Ingo Molnar <mingo@...e.hu> To: Jeremy Fitzhardinge <jeremy@...p.org> Cc: Suresh Siddha <suresh.b.siddha@...el.com>, "jens.axboe@...cle.com" <jens.axboe@...cle.com>, "paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>, "nickpiggin@...oo.com.au" <nickpiggin@...oo.com.au>, "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Mallick, Asit K" <asit.k.mallick@...el.com> Subject: Re: [patch] generic-ipi: fix the smp_mb() placement * Jeremy Fitzhardinge <jeremy@...p.org> wrote: > Ingo Molnar wrote: >> ok - so that makes it a v2.6.28 item i guess. >> > > The case Suresh is talking about was a fix to Xen itself, rather > than on the kernel side, so it doesn't need to be a .28 issue on > Xen's account. ok - but still the portion of the fix that strengthens barriers looks obvious to have and there's little downside that i can see. Suresh, you might want to split the patch(es) in two: get the barrier strengthening changes into v2.6.28 (to fix the x2apic bug), while the aspects that _weaken_ barriers can wait for v2.6.29. With that it would be a 100% safe change for v2.6.28-rc4. Ingo -- 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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