From: Brian Pomerantz <bapper@piratehaven.org>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: Pentium 4 and 2.4/2.5
Date: Wed, 8 Nov 2000 10:12:48 -0800 [thread overview]
Message-ID: <20001108101248.A8902@skull.piratehaven.org> (raw)
In-Reply-To: <E13tZMe-0000F8-00@the-village.bc.nu> <Pine.LNX.4.10.10011080953130.16579-100000@penguin.transmeta.com>
In-Reply-To: <Pine.LNX.4.10.10011080953130.16579-100000@penguin.transmeta.com>
On Wed, Nov 08, 2000 at 10:10:45AM -0800, Linus Torvalds wrote:
>
> Now, I could imagine that Intel would select an instruction that didn't
> work on Athlon on purpose, but I really don't think they did. I don't
> have an athlon to test.
>
> It's easy enough to generate a test-program. If the following works,
> you're pretty much guaranteed that it's ok
>
> int main()
> {
> printf("Testing 'rep nop' ... ");
> asm volatile("rep ; nop");
> printf("okey-dokey\n");
> return 0;
> }
>
> (there's not much a "rep nop" _can_ do, after all - the most likely CPU
> extension would be to raise an "Illegal Opcode" fault).
>
Just for the curious, this works on Athlons. :)
BAPper
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next prev parent reply other threads:[~2000-11-08 18:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-04 23:36 Pentium 4 and 2.4/2.5 Frank Davis
2000-11-07 3:41 ` Andre Hedrick
2000-11-07 12:13 ` Alan Cox
2000-11-07 21:06 ` Lyle Coder
2000-11-07 21:48 ` Alan Cox
2000-11-08 17:31 ` Linus Torvalds
2000-11-08 17:26 ` Linus Torvalds
2000-11-08 17:50 ` Alan Cox
2000-11-08 18:10 ` Linus Torvalds
2000-11-08 18:12 ` Brian Pomerantz [this message]
2000-11-08 18:21 ` Alan Cox
2000-11-08 18:27 ` kernel
2000-11-08 18:47 ` Alan Cox
2000-11-09 20:42 ` Simon Kirby
2000-11-08 18:29 ` Brian Pomerantz
2000-11-08 18:17 ` Alan Cox
2000-11-07 4:01 ` Robert M. Love
2000-11-07 12:04 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2000-11-05 0:04 Frank Davis
2000-11-08 0:43 ` Alan Cox
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