From: Doug McNaught <doug@mcnaught.org>
To: Arjan van de Ven <arjanv@redhat.com>
Cc: Linus Torvalds <torvalds@osdl.org>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
Andi Kleen <ak@suse.de>,
"Siddha, Suresh B" <suresh.b.siddha@intel.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>
Subject: Re: [announce] [patch] NX (No eXecute) support for x86, 2.6.7-rc2-bk2
Date: Wed, 02 Jun 2004 17:31:37 -0400 [thread overview]
Message-ID: <87u0xtbq9y.fsf@asmodeus.mcnaught.org> (raw)
In-Reply-To: <20040602211714.GB29687@devserv.devel.redhat.com> (Arjan van de Ven's message of "Wed, 2 Jun 2004 23:17:14 +0200")
Arjan van de Ven <arjanv@redhat.com> writes:
> On Wed, Jun 02, 2004 at 02:13:13PM -0700, Linus Torvalds wrote:
>>
>>
>> Just out of interest - how many legacy apps are broken by this? I assume
>> it's a non-zero number, but wouldn't mind to be happily surprised.
>
> based on execshield in FC1.. about zero.
IIRC, Lisp systems like CMUCL and SBCL (plus commercial Lisps) had
problems with FC1 due to execshield. They tend to do things like
compile code on the fly to heap memory and expect to be able to run
it.
>> And do we have some way of on a per-process basis say "avoid NX because
>> this old version of Oracle/flash/whatever-binary-thing doesn't run with
>> it"?
>
> yes those aren't compiled with the PT_GNU_STACK elf flag and run with the
> stack executable just fine. GCC will also emit a "make the stack executable"
> flag when it emits code that puts stack trampolines up.
> That all JustWorks(tm).
Given this I wonder why they had trouble...
Disclaimer: I don't hack on free Lisps; I just follow some of the
mailing lists, so I may have important details wrong. :)
-Doug
next prev parent reply other threads:[~2004-06-02 21:35 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-02 20:50 [announce] [patch] NX (No eXecute) support for x86, 2.6.7-rc2-bk2 Ingo Molnar
2004-06-02 21:00 ` Christoph Hellwig
2004-06-02 21:07 ` Ingo Molnar
2004-06-02 21:13 ` Linus Torvalds
2004-06-02 21:17 ` Arjan van de Ven
2004-06-02 21:31 ` Doug McNaught [this message]
2004-06-08 8:46 ` Jakub Jelinek
2004-06-03 1:12 ` Joel Becker
2004-06-03 1:27 ` Andi Kleen
2004-06-03 6:24 ` Arjan van de Ven
2004-06-03 20:37 ` jlnance
2004-06-03 7:21 ` Ingo Molnar
2004-06-03 12:44 ` Ingo Molnar
2004-06-03 15:54 ` Andi Kleen
2004-06-03 23:01 ` Andy Lutomirski
2004-06-03 23:08 ` Andi Kleen
2004-06-03 23:54 ` Andy Lutomirski
2004-06-04 0:05 ` Andy Lutomirski
2004-06-04 9:25 ` Ingo Molnar
2004-06-04 15:26 ` Andy Lutomirski
2004-06-04 15:36 ` Linus Torvalds
2004-06-04 15:41 ` Arjan van de Ven
2004-06-04 15:47 ` Linus Torvalds
2004-06-04 15:51 ` Arjan van de Ven
2004-06-04 16:02 ` Linus Torvalds
2004-06-04 16:13 ` Andi Kleen
2004-06-04 16:37 ` Arjan van de Ven
2004-06-04 16:40 ` Christoph Hellwig
2004-06-04 17:27 ` David Mosberger
2004-06-04 17:30 ` Andi Kleen
2004-06-08 9:07 ` Jakub Jelinek
2004-06-08 9:14 ` Andi Kleen
2004-06-08 9:19 ` Arjan van de Ven
2004-06-04 16:51 ` Ulrich Drepper
2004-06-08 17:15 ` Bill Davidsen
2004-06-04 18:11 ` Gerhard Mack
2004-06-04 18:12 ` Arjan van de Ven
2004-06-04 16:06 ` Ingo Molnar
2004-06-04 17:20 ` Ingo Molnar
2004-06-04 17:22 ` Ingo Molnar
2004-06-04 17:32 ` Ingo Molnar
2004-06-03 19:24 ` Suresh Siddha
2004-06-03 20:37 ` Andi Kleen
2004-06-03 22:58 ` Suresh Siddha
2004-06-03 23:06 ` Andi Kleen
2004-06-04 9:30 ` Ingo Molnar
2004-06-03 12:57 ` Brian Gerst
2004-06-04 9:39 ` Ingo Molnar
2004-06-04 10:41 ` Christoph Hellwig
2004-06-04 10:48 ` William Lee Irwin III
2004-06-03 16:21 ` Ulrich Drepper
2004-06-03 19:30 ` Kurt Garloff
2004-06-02 21:43 ` Andi Kleen
2004-06-03 0:11 ` Rusty Russell
2004-06-03 0:17 ` Jeff Garzik
2004-06-03 7:24 ` Ingo Molnar
2004-06-03 8:47 ` Ingo Molnar
2004-06-03 8:53 ` Ingo Molnar
2004-06-04 0:04 ` Rusty Russell
2004-06-03 9:07 ` Ingo Molnar
2004-06-03 14:36 ` Gerhard Mack
2004-06-03 16:22 ` Arjan van de Ven
2004-06-04 9:36 ` Ingo Molnar
2004-06-04 11:59 ` Stephen Wille Padnos
[not found] <22L0f-5Ci-11@gated-at.bofh.it>
[not found] ` <22O7J-8dw-11@gated-at.bofh.it>
[not found] ` <22Wf4-5Xv-23@gated-at.bofh.it>
2004-06-03 9:43 ` Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2004-06-04 18:01 Nakajima, Jun
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