From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51179) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bEt8p-0005UM-Qb for qemu-devel@nongnu.org; Mon, 20 Jun 2016 02:57:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bEt8j-0002OD-Ux for qemu-devel@nongnu.org; Mon, 20 Jun 2016 02:57:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57223) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bEt8j-0002O9-Pe for qemu-devel@nongnu.org; Mon, 20 Jun 2016 02:56:57 -0400 References: <20160616060621.30422-1-haozhong.zhang@intel.com> <20160616060621.30422-4-haozhong.zhang@intel.com> <20160616111951.yvmr6tznzw6tyxlx@hz-desktop> <603c703c-5142-4721-e5a3-2d147c32ccd1@redhat.com> <20160617202118.GA8131@linux.intel.com> <20160620030941.2kro4d44b5degiya@hz-desktop> From: Paolo Bonzini Message-ID: Date: Mon, 20 Jun 2016 08:56:51 +0200 MIME-Version: 1.0 In-Reply-To: <20160620030941.2kro4d44b5degiya@hz-desktop> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Raj, Ashok" , Laszlo Ersek , rkrcmar@redhat.com, qemu-devel@nongnu.org, Richard Henderson , Eduardo Habkost , "Michael S . Tsirkin" , Marcelo Tosatti , kvm@vger.kernel.org, Boris Petkov , Tony Luck , Andi Kleen On 20/06/2016 05:09, Haozhong Zhang wrote: > In the current nested VMX implementation in QEMU, setup > MSR_IA32_FEATURE_CONTROL is left to guest. So I think, for LMCE which > is another feature involving MSR_IA32_FEATURE_CONTROL, we may follow > the existing code. > > Paolo and Radim, is there any case that objects to setting > MSR_IA32_FEATURE_CONTROL in QEMU? If the SDM says that the reset state of the MSR is zero, QEMU should initialize it to zero. Paolo