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Date: Tue, 18 Dec 2007 01:00:15 -0500 From: Kyle McMartin <kyle@...artin.ca> To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> Cc: "de Dinechin, Christophe (Integrity VM)" <christophe.de-dinechin@...com>, "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Picco, Robert W." <robert.picco@...com>, "tony.luck@...el.com" <tony.luck@...el.com> Subject: Re: [PATCH] ia64: Avoid unnecessary TLB flushes when allocating memory On Tue, Dec 18, 2007 at 10:05:45AM +0900, KAMEZAWA Hiroyuki wrote: > On Thu, 13 Dec 2007 15:03:07 +0000 > > > + if (mm != active_mm) { > > + /* Restore region IDs for mm */ > > + if (mm && active_mm) { > > + activate_context(mm); > > + } else { > > + flush_tlb_all(); > > + return; > > + } > > } > should be > platform_global_tlb_purge is already (and afaict, only) called under preempt_disable already. then again, the sn2 global_tlb_purge does it, so possibly for completeness sake it should be added here as well? regards, kyle -- 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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