Messages in this thread | | | Date | Fri, 20 Jul 2007 10:51:23 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [BUGFIX]{PATCH] flush icache on ia64 take2 |
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On Thu, 19 Jul 2007 17:18:59 +0200 Zoltan Menyhart <Zoltan.Menyhart@bull.net> wrote:
> KAMEZAWA Hiroyuki wrote: > > > Hmm...but the current code flushes the page. just do it in "lazy" way. > > much difference ? > > I agree the current code flushes the I-cache for all kinds of file > systems (for PTEs with the exec bit on). > > The error is that it does it after the PTE is written. > > In addition, I wanted to optimize it to gain a few %. I'm glad, too if we can do it. But it seems that we need a bit clever way to do that.
> Apparently this idea is not much welcome. > > I can agree that flushing the I-cache (if the architecture requires it) > before setting the PTE eliminates the error. > Hm, I'll refresh and repost the patch.
Thanks, -Kame
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