From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Arjan van de Ven <arjanv@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>, linux-mm mailing list <linux-mm@kvack.org>
Subject: Re: arch_get_unmapped_area_topdown vs stack reservations
Date: Tue, 17 Aug 2004 23:18:30 -0700 [thread overview]
Message-ID: <259380000.1092809909@[10.10.2.4]> (raw)
In-Reply-To: <20040818061121.GB21740@devserv.devel.redhat.com>
--Arjan van de Ven <arjanv@redhat.com> wrote (on Wednesday, August 18, 2004 08:11:21 +0200):
> On Tue, Aug 17, 2004 at 03:18:34PM -0700, Martin J. Bligh wrote:
>> I worry that the current code will allow us to intrude into the
>> reserved stack space with a vma allocation if it's requested at
>> an address too high up. One could argue that they got what they
>> asked for ... but not sure we should be letting them do that?
>
> well even the non-flexmmap code allows this...
Yeah, wasn't meant as a criticism of the new layout, just a general
improvement, perhaps.
> what is the problem ?
Just that if they allocate right up to the stack, we'll go boom shortly
afterwards. I guess the question is ... what exactly are the rules
for stack space reservations?
M.
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next prev parent reply other threads:[~2004-08-18 6:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-17 22:18 Martin J. Bligh
2004-08-18 6:11 ` Arjan van de Ven
2004-08-18 6:18 ` Martin J. Bligh [this message]
2004-08-18 6:36 ` Arjan van de Ven
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