From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Mosberger <davidm@napali.hpl.hp.com>
Date: Sat, 17 Jul 2004 04:37:20 +0000
Subject: Re: serious performance regression due to NX patch
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To: Linus Torvalds <torvalds@osdl.org>
Cc: davidm@hpl.hp.com, Mark Haverkamp <markh@osdl.org>, Ingo Molnar <mingo@redhat.com>, Jakub Jelinek <jakub@redhat.com>, suresh.b.siddha@intel.com, jun.nakajima@intel.com, Andrew Morton <akpm@osdl.org>, linux-ia64@vger.kernel.org, linux-kernel <linux-kernel@vger.kernel.org>

>>>>> On Fri, 16 Jul 2004 18:39:40 -0700 (PDT), Linus Torvalds <torvalds@osdl.org> said:

  Linus> No. Using "def_flags" was a mistake for the whole VM_EXEC
  Linus> thing. It's not designed for that, and it doesn't work that
  Linus> way. I applied the paper-over fix that gets it
  Linus> almost-working, but I'm waiting for Ingo to rewrite it by
  Linus> just saving the "executable_stack" information at exec time,
  Linus> and not playing with def_flags at all.

I'm very happy to hear that.

Thanks,

	--david