From: "Ed Swierk" <eswierk@gmail.com>
To: qemu-devel@nongnu.org
Cc: Andre Pech <andre.pech@gmail.com>
Subject: Re: [Qemu-devel] kqemu version 1.3.0pre5
Date: Tue, 28 Mar 2006 11:38:20 -0800 [thread overview]
Message-ID: <c1bf1cf0603281138u220d3329u9f17c59bfa405935@mail.gmail.com> (raw)
In-Reply-To: <20060328184037.GJ8186@suse.de>
On 3/28/06, Jens Axboe <qemu@kernel.dk> wrote:
> > monitor/mwait feature present.
> > using mwait in idle threads.
>
> [snip]
>
> > invalid operand: 0000 [#1]
> > Modules linked in:
> > CPU: 0
> > EIP: 0060:[<c0101147>] Not tainted VLI
> > EFLAGS: 00010246 (2.6.14-1.1656_FC4)
> > EIP is at mwait_idle+0x2f/0x41
>
> I don't think qemu supports PNI, which includes the monitor/mwait
> additions. I wonder why Linux detects that. You can probably get around
> it for now by either passing idle=poll as a boot parameter, or compile
> your kernel for plain i586 for instance.
It seems that with -kernel-kqemu, the guest kernel is seeing the CPUID
of the host machine rather than the one normally generated by qemu.
The workarounds you suggest do work--thanks for your help. However,
ideally kqemu would trap the CPUID instruction and mask the feature
bits for unsupported CPU features.
--Ed
next prev parent reply other threads:[~2006-03-28 19:38 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-27 21:30 [Qemu-devel] kqemu version 1.3.0pre5 Fabrice Bellard
2006-03-28 6:21 ` Pascal Terjan
2006-03-28 8:26 ` Brad Campbell
2006-03-28 16:00 ` sofar
2006-03-28 11:34 ` Kazu
2006-03-28 11:50 ` Brad Campbell
2006-03-28 12:04 ` Marco Matthies
2006-03-28 12:27 ` andrzej zaborowski
2006-03-28 12:33 ` Paul Brook
2006-03-28 12:54 ` Bruno Abinader
2006-03-28 12:57 ` Brad Campbell
2006-03-28 12:59 ` Jernej Simončič
2006-03-28 15:40 ` Kazu
2006-03-28 18:19 ` Ed Swierk
2006-03-28 18:39 ` Brad Campbell
2006-03-28 18:40 ` Jens Axboe
2006-03-28 19:38 ` Ed Swierk [this message]
2006-03-28 21:12 ` Fabrice Bellard
2006-03-29 15:38 ` [Qemu-devel][PATCH] add PNI user instructions Joachim Henke
2006-03-31 7:23 ` [Qemu-devel] kqemu version 1.3.0pre5 Christian MICHON
2006-03-31 7:42 ` denis.scheidt
2006-04-05 19:25 ` [Qemu-devel] qemu-0.8.0 and vde-1.5.9 question Ishwar Rattan
2006-04-05 20:15 ` Bakul Shah
2006-04-09 16:45 ` Jim C. Brown
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