Re: [Qemu-devel] [PATCH 2/2] i386/cpu/hyperv: support over 64 vcpus for windows guests

2017-09-10 Thread Gonglei (Arei)
> -Original Message- > From: Eduardo Habkost [mailto:ehabk...@redhat.com] > Sent: Sunday, September 10, 2017 4:46 AM > To: Gonglei (Arei) > Cc: qemu-devel@nongnu.org; m...@redhat.com; pbonz...@redhat.com; > r...@twiddle.net; mtosa...@redhat.com; vroze...@redhat.com; > Huangweidong (C) >

Re: [Qemu-devel] [PATCH 2/2] i386/cpu/hyperv: support over 64 vcpus for windows guests

2017-09-09 Thread Eduardo Habkost
On Thu, Sep 07, 2017 at 01:05:33AM +, Gonglei (Arei) wrote: > > > > -Original Message- > > From: Eduardo Habkost [mailto:ehabk...@redhat.com] > > Sent: Tuesday, September 05, 2017 9:17 PM > > To: Gonglei (Arei) > > Cc: qemu-devel@nongnu.org; m...@redhat.com; pbonz...@redhat.com; > >

Re: [Qemu-devel] [PATCH 2/2] i386/cpu/hyperv: support over 64 vcpus for windows guests

2017-09-06 Thread Gonglei (Arei)
> -Original Message- > From: Eduardo Habkost [mailto:ehabk...@redhat.com] > Sent: Tuesday, September 05, 2017 9:17 PM > To: Gonglei (Arei) > Cc: qemu-devel@nongnu.org; m...@redhat.com; pbonz...@redhat.com; > r...@twiddle.net; mtosa...@redhat.com; vroze...@redhat.com; > Huangweidong (C) >

Re: [Qemu-devel] [PATCH 2/2] i386/cpu/hyperv: support over 64 vcpus for windows guests

2017-09-05 Thread Eduardo Habkost
On Tue, Sep 05, 2017 at 05:30:05PM +0800, Gonglei wrote: > Starting with Windows Server 2012 and Windows 8, if > CPUID.4005.EAX contains a value of -1, Windows assumes specific > limit to the number of VPs. In this case, Windows Server 2012 > guest VMs may use more than 64 VPs, up to the

[Qemu-devel] [PATCH 2/2] i386/cpu/hyperv: support over 64 vcpus for windows guests

2017-09-05 Thread Gonglei
Starting with Windows Server 2012 and Windows 8, if CPUID.4005.EAX contains a value of -1, Windows assumes specific limit to the number of VPs. In this case, Windows Server 2012 guest VMs may use more than 64 VPs, up to the maximum supported number of processors applicable to the specific