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From: Paolo Bonzini <pbonzini@redhat.com>
To: Eduardo Habkost <ehabkost@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] -cpu check, rdtscp and AMD KVM
Date: Thu, 12 Nov 2015 16:58:37 +0100	[thread overview]
Message-ID: <5644B72D.8080807@redhat.com> (raw)
In-Reply-To: <20151112152510.GM4180@thinpad.lan.raisama.net>



On 12/11/2015 16:25, Eduardo Habkost wrote:
> On Thu, Nov 12, 2015 at 11:53:44AM +0100, Paolo Bonzini wrote:
>> Eduardo,
>>
>> running QEMU 2.5 on SVM causes a warning because rdtscp is not supported
>> by KVM.  While I can fix it, that leaves a warning on all existing kernels.
> 
> You mean when using Opteron_G2 or newer, right? qemu64 and kvm64
> don't have rdtscp enabled.
> 
>> What do you think is the best way forward?
> 
> To simply remove rdtscp from all Opteron_G* models?

Not sure this is the right thing to do...  Real hardware has it, and
going forward KVM will provide it.

Paolo

  reply	other threads:[~2015-11-12 15:58 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-12 10:53 [Qemu-devel] -cpu check, rdtscp and AMD KVM Paolo Bonzini
2015-11-12 15:25 ` Eduardo Habkost
2015-11-12 15:58   ` Paolo Bonzini [this message]
2015-11-12 16:27     ` Eduardo Habkost
2015-11-12 16:35       ` Paolo Bonzini
2015-11-12 16:48         ` Eduardo Habkost

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