From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] lowest valid stack address
Date: Wed, 2 Sep 2009 09:35:26 -0400 [thread overview]
Message-ID: <0c7ec36d740f732994044bd3bfc4a61b@quanstro.net> (raw)
In-Reply-To: <9ab217670909020628t15f58a3bj99210c287fa5e298@mail.gmail.com>
> problem ended up being that I'd have to rework a lot of the slab
> allocator, or do checks on every memory allocation, and I didn't want
> to do that. More detailed info for those who care:
could you use plan 9 terminology?
>
> Lemma: In order to avoid overcommitting, we must impose limits on how
> much memory may, in fact, be allocated. To make the implementation
> provable, you must be able to assert that memory always comes from the
> same spot, and you thus have a single path to follow into allocation.
"from the same spot" could mean from the same point in the code or
from the same physical address. either way, i don't buy this assertion.
counter example: ssd drive remapping algorithms.
- erik
next prev parent reply other threads:[~2009-09-02 13:35 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-01 15:08 erik quanstrom
2009-09-01 16:52 ` cinap_lenrek
2009-09-01 16:55 ` erik quanstrom
2009-09-01 17:47 ` erik quanstrom
2009-09-01 23:22 ` Russ Cox
2009-09-01 23:49 ` erik quanstrom
2009-09-01 23:59 ` Russ Cox
2009-09-02 0:18 ` Devon H. O'Dell
2009-09-02 8:01 ` Andrés Domínguez
2009-09-02 8:58 ` Gorka Guardiola
2009-09-02 13:32 ` erik quanstrom
2009-09-02 13:28 ` Devon H. O'Dell
2009-09-02 13:35 ` erik quanstrom [this message]
2009-09-02 14:17 ` Devon H. O'Dell
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