From: Mikael Pettersson <mikpe@it.uu.se>
To: Arjan van de Ven <arjan@infradead.org>
Cc: David Wagner <daw-usenet@taverner.cs.berkeley.edu>,
linux-kernel@vger.kernel.org
Subject: Re: Really good idea to allow mmap(0, FIXED)?
Date: Fri, 6 Oct 2006 12:36:16 +0200 [thread overview]
Message-ID: <17702.12704.868782.312125@alkaid.it.uu.se> (raw)
In-Reply-To: <1160119515.3000.89.camel@laptopd505.fenrus.org>
Arjan van de Ven writes:
> > mmap(0, 4096, PROT_READ|PROT_EXEC|PROT_WRITE,
> > MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
> > struct s *bar = 0;
>
> the question isn't if it's a good idea to allow mmap(0) but to allow
> mmap PROT_WRITE | PROT_EXEC !
It is if you want JITs, code loaders, virtualisation engines, etc
to continue working.
next prev parent reply other threads:[~2006-10-06 10:36 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-05 18:59 Michael Buesch
2006-10-05 19:50 ` linux-os (Dick Johnson)
2006-10-06 14:40 ` Michael Buesch
2006-10-05 21:58 ` Alan Cox
2006-10-06 14:44 ` Michael Buesch
2006-10-07 11:23 ` Pavel Machek
2006-10-05 23:55 ` David Wagner
2006-10-06 4:34 ` Jeremy Fitzhardinge
2006-10-06 5:39 ` Jan Engelhardt
2006-10-06 19:47 ` David Wagner
2006-10-06 7:25 ` Arjan van de Ven
2006-10-06 10:36 ` Mikael Pettersson [this message]
2006-10-06 11:20 ` Arjan van de Ven
2006-10-06 19:43 ` David Wagner
2006-10-08 0:22 ` Jeremy Fitzhardinge
2006-10-08 2:03 ` David Wagner
2006-10-08 19:18 ` Michael Buesch
2006-10-06 14:55 ` Michael Buesch
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