From: linux-kernel@ton.iguana.be (Ton Hospel)
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] linux-2.5.43_vsyscall_A0
Date: Sat, 19 Oct 2002 22:36:30 +0000 (UTC) [thread overview]
Message-ID: <aosmpe$o8e$1@post.home.lunix> (raw)
In-Reply-To: <200210190352.WAA05769@ccure.karaya.com>
In article <200210190352.WAA05769@ccure.karaya.com>,
Jeff Dike <jdike@karaya.com> writes:
>
> This needs to be virtualizable somehow, which means that apps run inside
> UML, without being changed, get the UML vsyscalls. There are a couple of
> possiblities that I can think of:
> a get_vsyscall system call which is executed by libc on startup -
> UML would return a different calue from the host
> some mechanism for UML to map its own vsyscall area in place of
> the host's - it wouldn't necessarily need to be able to unmap it when it's
> running its own kernel code because it can probably arrange not to use the
> host's vsyscalls.
>
> Jeff
>
In case you want UML to also be able to work as a jail, it should
actually be impossible to get to the "real" systemcalls. In that case
just asking libc is not acceptable if the other area remains available
prev parent reply other threads:[~2002-10-19 22:27 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-18 22:57 john stultz
2002-10-18 22:58 ` [EXAMPLE CODE] linux-2.5.43_vsyscall_A0 john stultz
2002-10-19 3:52 ` [PATCH] linux-2.5.43_vsyscall_A0 Jeff Dike
2002-10-19 3:10 ` Andi Kleen
2002-10-19 4:49 ` Jeff Dike
2002-10-19 4:02 ` Andi Kleen
2002-10-19 4:16 ` Andrea Arcangeli
2002-10-20 2:59 ` Andi Kleen
2002-10-20 6:44 ` Elladan
2002-10-20 9:27 ` [discuss] " Andi Kleen
2002-10-20 10:58 ` Elladan
2002-10-20 11:20 ` Andi Kleen
2002-10-20 14:51 ` Andrea Arcangeli
2002-10-21 16:49 ` george anzinger
2002-10-20 13:19 ` Andreas Jaeger
2002-10-20 14:59 ` Andrea Arcangeli
2002-10-19 4:10 ` Andrea Arcangeli
2002-10-19 4:45 ` Andi Kleen
2002-10-19 5:01 ` Andrea Arcangeli
2002-10-19 23:43 ` Jeff Dike
2002-10-20 0:15 ` Andrea Arcangeli
2002-10-20 2:03 ` Jeff Dike
2002-10-20 2:33 ` Andrea Arcangeli
2002-10-22 5:07 ` Jeff Dike
2002-10-22 4:15 ` Andi Kleen
2002-10-22 4:29 ` Andrew Morton
2002-10-22 9:39 ` Alan Cox
2002-10-22 16:12 ` Andrew Morton
2002-10-22 5:08 ` Andrea Arcangeli
2002-10-22 5:27 ` Andrea Arcangeli
2002-10-22 7:24 ` Elladan
2002-10-22 7:40 ` Andrea Arcangeli
2002-10-23 5:12 ` Elladan
2002-10-23 5:43 ` Elladan
2002-10-23 17:51 ` Gerrit Huizenga
2002-10-21 15:43 ` Stephen Hemminger
2002-10-21 16:26 ` Andi Kleen
2002-10-21 17:10 ` john stultz
2002-10-19 19:14 ` Bill Davidsen
2002-10-20 1:50 ` Rik van Riel
2002-10-20 2:56 ` Andi Kleen
2002-10-24 11:24 ` Pavel Machek
2002-10-24 11:24 ` Pavel Machek
2002-10-19 22:36 ` Ton Hospel [this message]
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