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From: Fabrice Bellard <fabrice@bellard.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] QEMU FreeBSD 6.1 "npxdna: fpcurthread == curthread" spewage
Date: Wed, 21 Jun 2006 22:54:43 +0200	[thread overview]
Message-ID: <4499B213.8030304@bellard.org> (raw)
In-Reply-To: <22d160bb0606211247k72f98f68pc54a409342092441@mail.gmail.com>

There is a bug in the FPU virtualization in kqemu which is only visible 
in the kernel virtualization case. I am trying a fix.

Fabrice.

Zach Metzinger wrote:
> Hi-
> 
> I'm using qemu-0.8.1 under FreeBSD 6.1-RELEASE from ports with
> kqemu-1.3.0pre7 (also from ports). The guest OS is Windows XP SP2.
> When I use the -kernel-kqemu flag to qemu, I get the following kernel
> console messages:
> 
> Jun 21 14:04:57 jitter kernel: npxdna: fpcurthread == curthread 5173 times
> Jun 21 14:04:57 jitter kernel: npxdna: fpcurthread == curthread 5174 times
> <...>
> 
> This happens quite a bit (5-10 a second) when using any block device.
> I assume this is because kernel I/O calls are being virtualized and
> are the cause of this.
> 
> When I do not use -kernel-kqemu, I do not get these messages. In both
> cases, Windows appears to work fine.
> 
> This thread:
> http://tinyurl.com/mbm5l
> appears to have some information on why this happens. Has a patch been
> released to fix this bug?
> 
> --- Zach
> 
> 
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
> 
> 

  reply	other threads:[~2006-06-21 21:34 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-21 19:47 [Qemu-devel] QEMU FreeBSD 6.1 "npxdna: fpcurthread == curthread" spewage Zach Metzinger
2006-06-21 20:54 ` Fabrice Bellard [this message]
2006-06-22  2:32   ` Zach Metzinger
2006-06-23 20:55     ` Fabrice Bellard
2006-06-23 21:14       ` WaxDragon
2006-06-23 23:11       ` Hetz Ben Hamo
2006-06-24 12:33         ` Fabrice Bellard
2006-06-24  3:54       ` Zach Metzinger
2006-06-24  8:22       ` RE : [Qemu-devel] QEMU FreeBSD 6.1 "npxdna: fpcurthread == curthread"spewage Denis SCHEIDT
2006-06-25 11:55       ` [Qemu-devel] QEMU FreeBSD 6.1 "npxdna: fpcurthread == curthread" spewage Jan Marten Simons

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