From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jose A. Lopes" Subject: Re: Guest to Host communication Date: Tue, 22 Oct 2013 15:42:20 +0200 Message-ID: <20131022134220.GD4223@google.com> References: <20131022075936.GB4223@google.com> <9AAE0902D5BC7E449B7C8E4E778ABCD013E890@AMSPEX01CL01.citrite.net> <20131022124857.GC4223@google.com> <9AAE0902D5BC7E449B7C8E4E778ABCD013ED63@AMSPEX01CL01.citrite.net> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1VYcE4-0002vk-AH for xen-devel@lists.xenproject.org; Tue, 22 Oct 2013 13:42:24 +0000 Received: by mail-bk0-f52.google.com with SMTP id e11so1300691bkh.39 for ; Tue, 22 Oct 2013 06:42:22 -0700 (PDT) Content-Disposition: inline In-Reply-To: <9AAE0902D5BC7E449B7C8E4E778ABCD013ED63@AMSPEX01CL01.citrite.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Paul Durrant Cc: "xen-devel@lists.xenproject.org" List-Id: xen-devel@lists.xenproject.org On Tue, Oct 22, 2013 at 01:18:56PM +0000, Paul Durrant wrote: > > -----Original Message----- > > From: Jose A. Lopes [mailto:jabolopes@google.com] > > Sent: 22 October 2013 13:49 > > To: Paul Durrant > > Cc: xen-devel@lists.xenproject.org > > Subject: Re: [Xen-devel] Guest to Host communication > > = > > Hi, > > = > > If I understood correctly, Xenstore requires writing a driver and > > loading it inside the VM. Is this correct? > > = > = > Well, yes you'll need some code in the guest, but drivers already exist f= or linux and windows so you could just use them. > = > > If so, then it seems this approach would require writing different > > drivers for different OSes, such as, Linux and Windows. Currently, we > > are just exploring different design options and we would like to aim > > at a uniform approach across different OSes. Is there an option like th= at ? > > = > = > What option do you expect that doesn't involve writing at least some code= for each OS you want to use? We were thinking of simply attaching a device. For example, add a SSD disk in DomU which is backed in Dom0 by a file. Is this possible? > = > Paul -- = Jose Antonio Lopes Ganeti Engineering Google Germany GmbH Dienerstr. 12, 80331, M=FCnchen Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Gesch=E4ftsf=FChrer: Graham Law, Christine Elizabeth Flores Steuernummer: 48/725/00206 Umsatzsteueridentifikationsnummer: DE813741370