From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:43086) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UWvLG-00052p-Bk for qemu-devel@nongnu.org; Mon, 29 Apr 2013 17:10:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UWvLE-0005Zm-Pt for qemu-devel@nongnu.org; Mon, 29 Apr 2013 17:10:34 -0400 Received: from mail-ee0-f50.google.com ([74.125.83.50]:39754) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UWvLE-0005ZO-Ib for qemu-devel@nongnu.org; Mon, 29 Apr 2013 17:10:32 -0400 Received: by mail-ee0-f50.google.com with SMTP id b15so1781959eek.37 for ; Mon, 29 Apr 2013 14:10:31 -0700 (PDT) Sender: Paolo Bonzini Message-ID: <517EE1B9.90609@redhat.com> Date: Mon, 29 Apr 2013 23:10:17 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1367137941-4310-1-git-send-email-jordan.l.justen@intel.com> <1367137941-4310-7-git-send-email-jordan.l.justen@intel.com> <517E2D63.6030700@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 6/6] pc_sysfw: change rom_only default to 0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jordan Justen Cc: Jordan Justen , qemu-devel Il 29/04/2013 20:23, Jordan Justen ha scritto: > On Mon, Apr 29, 2013 at 1:20 AM, Paolo Bonzini wrote: >> Il 28/04/2013 10:32, Jordan Justen ha scritto: >>> Now KVM can support a flash memory. This feature depends on >>> KVM_CAP_READONLY_MEM, which was introduced in Linux 3.7. >> >> I don't think we can require such a new kernel to run KVM. IIUC, an >> older kernel would just fail to start, right? > > Would it also be unacceptable to alter the behavior based on the kvm > capabilities? So, we can't use rom-mode for old kvm, but flash mode > for new kvm? (In other words, behave similarly to qemu 1.2-1.4 in kvm > vs. non-kvm mode.) No, unfortunately the host versions must not affect the hardware. Paolo