From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NSSkp-000603-Pm for qemu-devel@nongnu.org; Wed, 06 Jan 2010 05:04:39 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NSSkl-0005yO-1F for qemu-devel@nongnu.org; Wed, 06 Jan 2010 05:04:39 -0500 Received: from [199.232.76.173] (port=34070 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NSSkk-0005yK-Sy for qemu-devel@nongnu.org; Wed, 06 Jan 2010 05:04:34 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43965) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NSSkk-0003Lf-AC for qemu-devel@nongnu.org; Wed, 06 Jan 2010 05:04:34 -0500 Received: from int-mx04.intmail.prod.int.phx2.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.17]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o06A4WV6027515 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 6 Jan 2010 05:04:32 -0500 Date: Wed, 6 Jan 2010 12:04:30 +0200 From: Gleb Natapov Message-ID: <20100106100430.GE4905@redhat.com> References: <1262700774-1808-1-git-send-email-gleb@redhat.com> <1262700774-1808-3-git-send-email-gleb@redhat.com> <4B445E7D.6080309@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B445E7D.6080309@redhat.com> Subject: [Qemu-devel] Re: Fw: [PATCH v3 02/12] Add PV MSR to enable asynchronous page faults delivery. List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Dor Laor Cc: Gerd Hoffmann , qemu-devel , Glauber Costa On Wed, Jan 06, 2010 at 11:57:17AM +0200, Dor Laor wrote: > What's missing in this patch set and in similar pvclock > implementation is userspace activation of the features. > This should be part of the machine description and not enabled by > default without no control to deactivate it on a per guest basis. > > Gerd, since you're the qdev master, what's the best way to control it? > May be it should be done as other cpuid flags i.e -cpu kvm64,-kvmpvmmu,+kvmclock -- Gleb.