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Date: Thu, 31 Jan 2008 13:38:45 +0100 (CET) From: Thomas Gleixner <tglx@...utronix.de> To: Andi Kleen <ak@...e.de> cc: "Huang, Ying" <ying.huang@...el.com>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/5] x86: change_page_attr_clear fix On Thu, 31 Jan 2008, Andi Kleen wrote: > On Thursday 31 January 2008 08:35:59 Huang, Ying wrote: > > This patch replaces __change_page_attr_set_clr() with > > change_page_attr_set_clr() in change_page_attr_clear() to flush the > > TLB/cache properly. > > Good catch :-) It actually only needs to flush TLBs not caches in this > case. That's one of the items on our optimizations todo list already. There are more low hanging fruits, but we need to make sure that the non optimized version is bullet proof first. Thanks, tglx -- 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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