Hi,
I've noticed that too (on Xeon).
Netbsd installer gets a general protection fault (unknown rdmsr 0x1a0) and
traps into its debugger.
It then busy-waits for input, hence the high cpu usage.
kvm-10 too could not install netbsd for the same reason.
Uri.
-----Original Message-----
From: Michael Riepe [mailto:[EMAIL PROTECTED]
Sent: Tue 16/01/2007 15:23
To: Uri Lublin
Cc: kvm-devel@lists.sourceforge.net
Subject: Re: [kvm-devel] Talking about regressions...
Hi!
Just for the records: On the Xeon 53xx, netbsd produces a few kernel
messages before it dies with a protection fault:
kvm: msrs: 6
kvm: unhandled rdmsr: 0x1a0
inject_general_protection: rip 0xc0433a1c
kvm: unhandled rdmsr: 0x1a0
inject_general_protection: rip 0xc0433a1c
This is notably different from the behaviour on a Core Duo, maybe
because the Xeon is running in 64-bit mode.
Uri Lublin wrote:
> O.K.
> I'll try to reproduce it with netbsd, and investigate a little.
> Uri.
>
> ------------------------------------------------------------------------
> *From:* Michael Riepe [mailto:[EMAIL PROTECTED]
> *Sent:* Mon 15/01/2007 20:38
> *To:* Uri Lublin
> *Cc:* kvm-devel@lists.sourceforge.net
> *Subject:* Re: [kvm-devel] Talking about regressions...
>
> Hi!
>
> Uri Lublin wrote:
>>
>> Thanks for running those tests.
>> Does kvm complains ( dmesg ) ?
>
> Not in the cases I listed. The host just becomes very busy, for a long
> time. After ~30 minutes I lost patience and killed qemu.
>
> I see a single "kvm: emulating exchange as write" when I try to boot
> FreeBSD 6.1, and with Knoppix 5.1.1 the kernel reports "kvm: unhandled
> wrmsr: 0xc1" once. Neither of these worked with earlier kvm versions,
> though.
>
> Interestingly, Knoppix 5.1.1 *does* work on an AMD Quad Dual-Core
> Opteron we have at work (running Suse Linux Enterprise Server 10, as far
> as I remember). Knoppix 5.0, on the other hand, which works fine on the
> Core Duo, needs "acpi=off" as a boot parameter on the AMD.
>
> More AMD results: FreeBSD, NetBSD and OpenSolaris (32-bit versions) all
> fail with exceptions, usually page faults. OpenSolaris catches lots of
> SIGILL's. OpenSuse 10.2 (32 bit as well) works, even with gfxmenu
> enabled. Qemu-puppy behaves the same as on the Intel CPU - the old
> version works, the new one sometimes hangs (and at the same point).
>
> The next thing I'm going to try is the Dual Quad-Core Xeon... as soon as
> I can get my hands on it. :-)
>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] on behalf of Michael Riepe
>> Sent: Sun 14/01/2007 19:09
>> To: kvm-devel@lists.sourceforge.net
>> Subject: [kvm-devel] Talking about regressions...
>>
>> When I did a couple of tests the other day, I noticed that one or more
>> bugs must have been introduced at least into the vmx part in kvm-10:
>>
>> - netbsd 3.1 used to work with kvm-9. In kvm-10, the system hangs during
>> boot. One of the last things I can see is that a shell process dies with
>> a SIGSEGV. Then the load rises to 100% (sys) on the host and stays there
>> until I kill qemu (yes I've waited several minutes).
>>
>> - opensolaris displays a "Time of Day clock error" during boot, claiming
>> the clock has jumped by 0x5 (no unit given, I suppose that means
>> seconds). Everything else seems to work.
>>
>> - qemu-puppy-2.13-1 sometimes works and sometimes hangs somewhere inside
>> the initial ramdisk. The exact place seems to differ, but usually it
>> happens while the kernel modules are loaded. Again, host load rises to
>> 100%. An older version (2.01-3) still works fine. kvm-9 works, too.
>>
>> (Core Duo T2400, 32-bit SMP host, 32-bit guest, Linux 2.6.19 + kvm trunk
>> revision 4290)
>>
>> Any idea what to look for? The SIGSEGV on netbsd makes me suspect that
>> there's a problem with the page tables, but I couldn't narrow down the
>> cause yet.
>>
>> --
>> Michael "Tired" Riepe <[EMAIL PROTECTED]>
>> X-Tired: Each morning I get up I die a little
>>
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>
> --
> Michael "Tired" Riepe <[EMAIL PROTECTED]>
> X-Tired: Each morning I get up I die a little
>
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