From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vadim Rozenfeld <vrozenfe@redhat.com>
Subject: Re: [Qemu-devel] [Help] Windows2012 as Guest 64+cores on KVM Halts
Date: Mon, 13 Feb 2017 21:05:00 +1100
Message-ID: <1486980300.17184.28.camel@redhat.com>
References: <589C099A.9090605@huawei.com>
         <AF60004D-7133-44D1-8A9F-7DB9822D84AF@redhat.com>
         <33183CC9F5247A488A2544077AF19020DA1B4379@DGGEMA505-MBX.china.huawei.com>
         <105e5774-38c3-0683-ca08-64f6ed53c643@redhat.com>
         <33183CC9F5247A488A2544077AF19020DA1B6988@DGGEMA505-MBX.china.huawei.com>
         <2127602137.20489688.1486827559449.JavaMail.zimbra@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Cc: Yan Vugenfirer <yvugenfi@redhat.com>,
        Hangaohuai <hangaohuai@huawei.com>, qemu-devel@nongnu.org,
        kvm@vger.kernel.org, Radim Krcmar <rkrcmar@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
        "Gonglei (Arei)" <arei.gonglei@huawei.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx1.redhat.com ([209.132.183.28]:45238 "EHLO mx1.redhat.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751849AbdBMKFM (ORCPT <rfc822;kvm@vger.kernel.org>);
        Mon, 13 Feb 2017 05:05:12 -0500
In-Reply-To: <2127602137.20489688.1486827559449.JavaMail.zimbra@redhat.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

On Sat, 2017-02-11 at 10:39 -0500, Paolo Bonzini wrote:
> > 
> > 
> > > 
> > > On 10/02/2017 10:31, Gonglei (Arei) wrote:
> > > > 
> > > > But We tested the same cases on Xen platform and VMware, and
> > > > the guest booted successfully.
> > > 
> > > Were these two also tested with enlightenments enabled?  TCG
> > > surely isn't.
> > 
> > About TCG, I just remove ' accel=kvm,' and 'hy_releaxed' from the
> > below QEMU
> > Command line, I thought the hyper-V enabled then. Sorry about that.
> > 
> > But for Xen, we set 'viridian=1' which be thought the Hyper-V is
> > enabled.
> > 
> > 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 [bit 31]=1) turned on.

Best regards,
Vadim.
 
> 
> Ok, thanks for the clarifications!
> 
> Paolo