From: Paolo Bonzini <pbonzini@redhat.com>
To: Borislav Petkov <bp@alien8.de>
Cc: "Jörg Rödel" <joro@8bytes.org>, "kvm ML" <kvm@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: Shut up unhandled MSR warnings
Date: Thu, 12 Nov 2015 11:33:33 +0100 [thread overview]
Message-ID: <56446AFD.4030800@redhat.com> (raw)
In-Reply-To: <20151112101317.GA3649@pd.tnic>
On 12/11/2015 11:13, Borislav Petkov wrote:
> Hey Paolo,
>
> do we apply stuff like that below?
If we really need to, we do.
> When booting guests all the time here, dmesg gets filled up with those
> "unhandled rdmsr" useless warnings. The patch below shuts them up.
>
> The only problem is that the IC CFG MSR has those fields
> defined starting from F15h and I don't see a way to check the
> family/model/stepping of the guest CPU in kvm. Is there?
Yes, see guest_cpuid_has_* for an example of reading the CPUID values.
But if it's defined for _all_ models starting at family 21, we can just
do it unconditionally.
Paolo
next prev parent reply other threads:[~2015-11-12 10:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-12 10:13 Shut up unhandled MSR warnings Borislav Petkov
2015-11-12 10:33 ` Paolo Bonzini [this message]
2015-11-12 10:59 ` Borislav Petkov
2015-11-12 12:16 ` Borislav Petkov
2015-11-12 12:28 ` Paolo Bonzini
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