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Date: Tue, 10 Nov 2009 13:26:03 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: Matt Thrailkill <matt.thrailkill@...il.com> CC: Pavel Machek <pavel@....cz>, Willy Tarreau <w@....eu>, Avi Kivity <avi@...hat.com>, Alan Cox <alan@...rguk.ukuu.org.uk>, Matteo Croce <technoboy85@...il.com>, Sven-Haegar Koch <haegar@...net.de>, Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org Subject: Re: i686 quirk for AMD Geode On 11/10/2009 01:21 PM, Matt Thrailkill wrote: > On Tue, Nov 10, 2009 at 12:54 PM, Pavel Machek <pavel@....cz> wrote: >> *One* CMOV in the inner loop will make your performance go down 20x. > > This is 20x slower than not running at all, right? And that's the fundamental win of doing a fullscale emulator: you will always be able to run, at *some* performance level. -hpa -- 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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