From: Arjan van de Ven <arjan@infradead.org>
To: Adrian Bunk <bunk@stusta.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>,
Christoph Hellwig <hch@infradead.org>,
keyrings@linux-nfs.org, linux-kernel@vger.kernel.org
Subject: Re: [Keyrings] Re: [PATCH 01/04] Add multi-precision-integer maths library
Date: Sun, 29 Jan 2006 14:09:08 +0100 [thread overview]
Message-ID: <1138540148.3002.9.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <20060129122901.GX3777@stusta.de>
>
> You are taking the wrong approach.
>
> The _only_ question that matters is:
> Why is it technically impossible to do the same in userspace?
>
> If it's technically possible to do the same in userspace, it must not be
> done in the kernel.
that is not a reasonable statement because...
1) you can do all of tcp/ip in userspace just fine
2) you can do the NFS server in userspace
3) ...
4) ...
there are reasons why things that can be done in userspace sometimes
still make sense to do in kernel space, performance could be one of
those reasons, being unreasonably complex in userspace is another.
Identity management to some degree belongs in the kernel, simply because
identity *enforcing* is in the kernel. Some things related to security
need to be in the kernel at least partially just to avoid a LOT of hairy
issues and never ending series of security holes due to the exceptional
complexity you get.
next prev parent reply other threads:[~2006-01-29 13:09 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-26 21:58 [PATCH 00/04] Add DSA key type David Härdeman
2006-01-26 21:58 ` [PATCH 03/04] Add encryption ops to the keyctl syscall David Härdeman
2006-01-26 21:58 ` [PATCH 02/04] Add dsa crypto ops David Härdeman
2006-01-26 21:58 ` [PATCH 01/04] Add multi-precision-integer maths library David Härdeman
2006-01-27 9:28 ` Christoph Hellwig
2006-01-27 20:07 ` David Howells
2006-01-27 20:41 ` David Härdeman
2006-01-27 22:19 ` [Keyrings] " Trond Myklebust
2006-01-27 23:35 ` Kyle Moffett
2006-01-28 0:27 ` Adrian Bunk
2006-01-28 3:45 ` Trond Myklebust
2006-01-28 7:17 ` Kyle Moffett
2006-01-28 10:39 ` Adrian Bunk
2006-01-28 0:22 ` Adrian Bunk
2006-01-28 10:46 ` David Härdeman
2006-01-28 13:03 ` Adrian Bunk
2006-01-28 17:09 ` David Härdeman
2006-01-28 16:37 ` [Keyrings] " Trond Myklebust
2006-01-28 16:57 ` David Härdeman
2006-01-29 3:20 ` Trond Myklebust
2006-01-29 11:33 ` David Härdeman
2006-01-29 12:29 ` Adrian Bunk
2006-01-29 13:09 ` Arjan van de Ven [this message]
2006-01-29 20:05 ` Steve French
2006-01-29 20:52 ` Arjan van de Ven
2006-01-29 21:41 ` Steve French
2006-02-06 12:31 ` David Howells
2006-01-29 23:18 ` Adrian Bunk
2006-01-29 13:18 ` David Härdeman
2006-01-29 23:36 ` Adrian Bunk
2006-01-30 18:09 ` Nix
2006-01-29 16:38 ` Trond Myklebust
2006-01-29 18:49 ` Dax Kelson
2006-01-29 19:10 ` Trond Myklebust
2006-01-29 21:29 ` David Härdeman
2006-01-29 21:46 ` Trond Myklebust
2006-01-29 21:13 ` David Härdeman
2006-01-29 21:28 ` Trond Myklebust
2006-01-29 22:02 ` David Härdeman
2006-01-29 22:05 ` Trond Myklebust
2006-01-29 22:54 ` Kyle Moffett
2006-01-29 23:07 ` Trond Myklebust
2006-01-29 23:15 ` Adrian Bunk
2006-01-29 21:09 ` Pavel Machek
2006-01-26 21:58 ` [PATCH 04/04] Add dsa key type David Härdeman
2006-01-27 1:10 ` [PATCH 00/04] Add DSA " Herbert Xu
2006-01-27 7:18 ` David Härdeman
2006-01-27 20:11 ` David Howells
2006-01-27 23:22 ` Herbert Xu
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