From: "David S. Ahern" <daahern@cisco.com>
To: Jes Sorensen <Jes.Sorensen@redhat.com>
Cc: Avi Kivity <avi@redhat.com>, kvm@vger.kernel.org
Subject: Re: [PATCH] Write to read-only msr MSR_IA32_PERF_STATUS is harmless, ignore it!
Date: Tue, 31 Aug 2010 14:00:58 -0600 [thread overview]
Message-ID: <4C7D5F7A.8030803@cisco.com> (raw)
In-Reply-To: <4C7D3617.5060804@redhat.com>
On 08/31/10 11:04, Jes Sorensen wrote:
>> Just grep for the msr name in a guest kernel source that's known to
>> trigger the message.
>
> Been there, done that! This happens with an F13 kernel during reboot.
> Ran the search on the expanded 2.6.32.8-149 tree and found no reference
> to anything trying to write it, except for KVM backing up the flag, but
> that shouldn't happen in the guest.
I've been seeing the messages with a 32-bit Fedora 10 guest running a
2.6.27 variant. The wrmsr messages are generated by the time the grub
menu appears. ie., pre-OS.
David
next prev parent reply other threads:[~2010-08-31 20:01 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-31 12:17 [PATCH] Write to read-only msr MSR_IA32_PERF_STATUS is harmless, ignore it! Jes.Sorensen
2010-08-31 16:28 ` Avi Kivity
2010-08-31 16:33 ` Jes Sorensen
2010-08-31 16:44 ` Avi Kivity
2010-08-31 17:04 ` Jes Sorensen
2010-08-31 20:00 ` David S. Ahern [this message]
2010-08-31 20:02 ` Marcelo Tosatti
2010-09-01 7:37 ` Avi Kivity
2010-09-01 8:42 ` Jes Sorensen
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