Re: Reminder: NET_NEEDS_GIANT, debug.mpsafenet going away in

From: Max Laier <max_at_love2party.net>
Date: Wed, 18 Jul 2007 20:23:54 +0200
On Wednesday 18 July 2007, Scott Bennett wrote:
>   [Cc: list trimmed a bit more  --SB]
>      On Tue, 17 Jul 2007 23:42:14 +0200 Max Laier <max_at_love2party.net>
>
> >[ Excess CC-list ... testers needed!!! ]
> >
> >On Tuesday 17 July 2007, Robert Watson wrote:
>
>      I missed Robert Watson's start of thread, so I'm jumping in here
> with a question.
>
> >> Dear all:
> >>
> >> This is a reminder e-mail that, in the very near future, Giant
> >> compatibility shims for network protocols will be removed.
>
>      How, if at all, will this affect qemu users?  qemu exits unless
> AIO is present in the kernel (or aio.ko has been kldload-ed).  In
> FreeBSD 6.2, AIO results in a warning message at boot time that says
> AIO is not MPSAFE and that therefore the networking stack will take a
> deep performance hit.

This has already been answered in the original thread.  AIO is mpsafe as 
of Tue May 9 00:10:11 2006 (vfs_aio.c, rev 1.223).

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Received on Wed Jul 18 2007 - 16:24:33 UTC

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