linux-kernel - Re: [PATCH] Let SYSVIPC default to 'y'

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Date:	Thu, 24 Apr 2008 02:22:30 +0200
From:	"Jesper Juhl" <jesper.juhl@...il.com>
To:	"Kevin Winchester" <kjwinchester@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	"Krishna Balasubramanian" <balasub@....ohio-state.edu>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Sam Ravnborg" <sam@...nborg.org>
Subject: Re: [PATCH] Let SYSVIPC default to 'y'

On 24/04/2008, Kevin Winchester <kjwinchester@...il.com> wrote:
> Jesper Juhl wrote:
>
> > SYSVIPC is a pretty crucial feature that I doubt very much if anyone
> except embedded people should even consider disabling - it simply breaks too
> much software for a Linux box to really be useful without it, for most
> purposes.
> > For that reason I find it quite odd that the feature defaults to 'No'
> currently.  I really cannot see any reason why we wouldn't want this to
> default to 'Yes', so this patch changes the default by adding 'default y' to
> Kconfig.
> >
<...snip...>
>
>  I am running up-to-date Kubuntu Hardy Heron, but...
>
>  kevin@...khine:~/linux/linux-2.6$ grep SYSVIPC .config
>  # CONFIG_SYSVIPC is not set
>
>  What software that would be in a standard install would be broken?  I don't
> seem to notice anything...
>
>  Not that I mind the default being changed - I just wonder if things on my
> box are broken and I just don't know it.
>

Well,
  DOSEmu doesn't work without it.
  SysOrb (http://www.sysorb.com/) doesn't work without it AFAIK.
  IIRC, X had trouble in the past without it.
  Anything that uses SysV shared memory, SysV message passing
(msgget(), msgsnd() etc..),
  SysV semaphores (semget() etc), will have trouble.
  In general, System V IPC is just used by many different programs...
Perhaps not any you run,
  but it is pretty widely used.

-- 
Jesper Juhl <jesper.juhl@...il.com>
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