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From: Vadim Rozenfeld <vrozenfe@redhat.com>
Date: Mon, 13 Feb 2017 21:05:00 +1100
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Subject: Re: [Qemu-devel] [Help] Windows2012 as Guest 64+cores on KVM Halts
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To: Paolo Bonzini <pbonzini@redhat.com>, "Gonglei (Arei)" <arei.gonglei@huawei.com>
Cc: Yan Vugenfirer <yvugenfi@redhat.com>, Hangaohuai <hangaohuai@huawei.com>, qemu-devel@nongnu.org, kvm@vger.kernel.org, Radim Krcmar <rkrcmar@redhat.com>

On Sat, 2017-02-11 at 10:39 -0500, Paolo Bonzini wrote:
> >=20
> >=20
> > >=20
> > > On 10/02/2017 10:31, Gonglei (Arei) wrote:
> > > >=20
> > > > But We tested the same cases on Xen platform and VMware, and
> > > > the guest booted successfully.
> > >=20
> > > Were these two also tested with enlightenments enabled?=C2=A0=C2=A0=
TCG
> > > surely isn't.
> >=20
> > About TCG, I just remove ' accel=3Dkvm,' and 'hy_releaxed' from the
> > below QEMU
> > Command line, I thought the hyper-V enabled then. Sorry about that.
> >=20
> > But for Xen, we set 'viridian=3D1' which be thought the Hyper-V is
> > enabled.
> >=20
> > For VMWare we also enabled the Hyper-V enlightenments.
If I'm not mistaken, even Hyper-V server doesn't allow specify more
than 64 vCPUs for Generation 1 VMs.
In any case, if you are only interested in hv_relaxed, you can drop it
off for WS2012 as long as you have cpu hypervisor flag
(CPUID.1:ECX=C2=A0[bit=C2=A031]=3D1) turned on.

Best regards,
Vadim.
=C2=A0
>=20
> Ok, thanks for the clarifications!
>=20
> Paolo