From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gerd Hoffmann <kraxel@redhat.com>
Subject: Re: [Qemu-devel] KVM call agenda for 2013-05-28
Date: Thu, 30 May 2013 08:37:52 +0200
Message-ID: <51A6F3C0.8040101@redhat.com>
References: <20130523124132.GA18596@redhat.com>
 <20130528235309.GA31648@morn.localdomain> <20130529084544.GG4472@redhat.com>
 <874ndl9355.fsf@codemonkey.ws>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Cc: KVM devel mailing list <kvm@vger.kernel.org>,
 Juan Quintela <quintela@redhat.com>, dwmw2@infradead.org, seabios@seabios.org,
 qemu-devel qemu-devel <qemu-devel@nongnu.org>,
 "Michael S. Tsirkin" <mst@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Return-path: <seabios-bounces@seabios.org>
In-Reply-To: <874ndl9355.fsf@codemonkey.ws>
List-Unsubscribe: <http://www.seabios.org/mailman/options/seabios>,
 <mailto:seabios-request@seabios.org?subject=unsubscribe>
List-Archive: <http://www.seabios.org/pipermail/seabios>
List-Post: <mailto:seabios@seabios.org>
List-Help: <mailto:seabios-request@seabios.org?subject=help>
List-Subscribe: <http://www.seabios.org/mailman/listinfo/seabios>,
 <mailto:seabios-request@seabios.org?subject=subscribe>
Errors-To: seabios-bounces@seabios.org
Sender: seabios-bounces@seabios.org
List-Id: kvm.vger.kernel.org

  Hi,

> Why should this be true?  Shouldn't we be allowed to increase the amount
> of memory the guest has across reboots?  That's equivalent to adding
> another DIMM after power off.

poweroff is equivalent to exiting qemu, not to guest reset.

> Not generating tables on reset does limit what we can do in a pretty
> fundamental way.  Even if you can argue it in the short term, I don't
> think it's viable in the long term.

I don't think so.  The procedure for adding/removing non-hotpluggable
hardware is:  poweroff, plugin/-out hardware (change config in qemu),
boot.  Hotpluggable hardware doesn't need acpi table updates.

cheers,
  Gerd