Re: [Qemu-devel] -cpu check, rdtscp and AMD KVM

2015-11-12 Thread Eduardo Habkost
(CCing libvir-list) On Thu, Nov 12, 2015 at 05:35:59PM +0100, Paolo Bonzini wrote: > On 12/11/2015 17:27, Eduardo Habkost wrote: > >> > > 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 wi

Re: [Qemu-devel] -cpu check, rdtscp and AMD KVM

2015-11-12 Thread Paolo Bonzini
On 12/11/2015 17:27, Eduardo Habkost wrote: >> > > 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. > > Do you see any alternative? Live with the warning, and document it in t

Re: [Qemu-devel] -cpu check, rdtscp and AMD KVM

2015-11-12 Thread Eduardo Habkost
On Thu, Nov 12, 2015 at 04:58:37PM +0100, Paolo Bonzini wrote: > 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

Re: [Qemu-devel] -cpu check, rdtscp and AMD KVM

2015-11-12 Thread Paolo Bonzini
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

Re: [Qemu-devel] -cpu check, rdtscp and AMD KVM

2015-11-12 Thread Eduardo Habkost
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

[Qemu-devel] -cpu check, rdtscp and AMD KVM

2015-11-12 Thread Paolo Bonzini
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. What do you think is the best way forward? Paolo