Hi Jirka Thanks for your comments,, the qemu patch is on the way, check https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg03951.html Even we cann't use qemu to boot a Skylake cpu virtual machine, but if we specify in host mode, we still can And besides, the follow cpu feature has already in qemu tree. + <!-- XSAVE CPUID[EAX=0xd,ECX=1].EAX --> + <feature name='xsaveopt'> + <cpuid function='0xd' eax='0x00000001'/> + </feature> + <feature name='xsavec'> + <cpuid function='0xd' eax='0x00000002'/> + </feature> + <feature name='xgetbv1'> + <cpuid function='0xd' eax='0x00000004'/> + </feature> + <feature name='xsaves' migratable='no'> + <cpuid function='0xd' eax='0x00000008'/> + </feature> Best Regards, Qiao, Liyong (Eli) OTC SSG Intel ------------------------------------------------ 此致 敬礼！ 英特尔（中国）有限公司软件与服务部开源技术中心 乔立勇 -----Original Message----- From: Jiri Denemark [mailto:jdenemar@xxxxxxxxxx] Sent: Monday, May 16, 2016 9:03 PM To: Qiao, Liyong <liyong.qiao@xxxxxxxxx> Cc: libvir-list@xxxxxxxxxx Subject: Re: [PATCH] Add Skylake Cpu Model On Mon, May 16, 2016 at 17:15:44 +0800, Eli Qiao wrote: > Add Skylake Cpu model to cpu maps to let libvirt discover host Skylake > cpu model correctly. > > Currently, libvirt still think a Skylake cpu as Broadwell-noTSX > Signed-off-by: Eli Qiao <liyong.qiao@xxxxxxxxx> > --- > src/cpu/cpu_map.xml | 76 > ++++++++++++++++++++++++++++++++++++++++++++++++++++ + > 1 file changed, 76 insertions(+) Adding a new model to libvirt when there is no support for it in QEMU makes no sense. The only benefit will be seeing Skylake in capabilities XML, but users won't be able to use it anyway. Jirka -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list