From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:39828) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gcTjd-0008Nb-MT for qemu-devel@nongnu.org; Thu, 27 Dec 2018 06:21:54 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gcTjZ-0004DI-OK for qemu-devel@nongnu.org; Thu, 27 Dec 2018 06:21:53 -0500 Received: from mail-lj1-x22c.google.com ([2a00:1450:4864:20::22c]:37719) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gcTjZ-00046m-Ei for qemu-devel@nongnu.org; Thu, 27 Dec 2018 06:21:49 -0500 Received: by mail-lj1-x22c.google.com with SMTP id t18-v6so15992379ljd.4 for ; Thu, 27 Dec 2018 03:21:49 -0800 (PST) From: Andrew Randrianasulu Date: Thu, 27 Dec 2018 14:21:34 +0300 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201812271421.34926.randrianasulu@gmail.com> Subject: Re: [Qemu-devel] Qemu the right way -[Subthread Cores] List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: liebrecht@grossmann-venter.com, qemu-devel@nongnu.org > Since I do not have networking sorted out yet I cannot update win7 pro, and it might be the updates which are needed for allowing more than two cpus. hm, brief search on my side resulted in this tip: https://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/windows-7-professional-x64-only-showing-2-of-8/0155f525-df73-4642-a828-21b80d1564b0 ---------- Some recommendations (in Windows, make sure you are running as Administrator): - Run MSConfig -> Change to Boot tab -> Advanced Options -> "Number of Processors", make sure there is no check mark. - Delete processor entries listed in Device Manager, then reboot. ------------- (I don't think BIOS options from this answer really apply directly to qemu case) also, if win (or some applications inside it) keep crashing with -cpu host, you can try to reload host (Linux) kvm module with additional option: "options kvm ignore_msrs=1" line (without quotes) should be added to /etc/modprobe.d/kvm.conf from https://www.passmark.com/forum/performancetest/4748-startup-error-number-4-on-qemu-bsod