Re: serious performance regression due to NX patch

[David Mosberger]

>>>>> On Mon, 12 Jul 2004 15:54:56 -0400 (EDT), Ingo Molnar <mingo@xxxxxxxxxx> said:

  Ingo> On Mon, 12 Jul 2004, David Mosberger wrote:

  Ingo> is it an issue? Each new port will have PT_GNU_STACK, unless they base
  Ingo> themselves on old compilers.

  >> PT_GNU_STACK is pure bloat on new architectures (and ia64).

  Ingo> EF_IA_64_LINUX_EXECUTABLE_STACK is using elf_ex->e_flags. I
  Ingo> did it the same way for x86 originally, but the tools people
  Ingo> specifically rejected it as a hack. We dont control the ELF
  Ingo> specification, but a new gcc section like PT_GNU_STACK is fair
  Ingo> game. So it might be 'bloat' but it's clean and doesnt try to
  Ingo> hijack.

I know.  All I'm saying is that when the stack permissions match the
permission which the platform uses by default, the PT_GNU_STACK header
should be omitted.

	--david
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