From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:46662)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1Swx9g-0006H1-KV
	for qemu-devel@nongnu.org; Thu, 02 Aug 2012 11:17:44 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1Swx9a-0003Bo-To
	for qemu-devel@nongnu.org; Thu, 02 Aug 2012 11:17:40 -0400
Received: from mail-wg0-f53.google.com ([74.125.82.53]:45551)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1Swx9a-0003Bc-NJ
	for qemu-devel@nongnu.org; Thu, 02 Aug 2012 11:17:34 -0400
Received: by wgbfm10 with SMTP id fm10so6479883wgb.10
	for <qemu-devel@nongnu.org>; Thu, 02 Aug 2012 08:17:34 -0700 (PDT)
Sender: Paolo Bonzini <paolo.bonzini@gmail.com>
Message-ID: <501A9A07.4040308@redhat.com>
Date: Thu, 02 Aug 2012 17:17:27 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
MIME-Version: 1.0
References: <1343873409-8571-1-git-send-email-david@gibson.dropbear.id.au>
	<1343873409-8571-2-git-send-email-david@gibson.dropbear.id.au>
	<87vch2nhn0.fsf@codemonkey.ws> <1343879428.6911.6.camel@pasglop>
In-Reply-To: <1343879428.6911.6.camel@pasglop>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH 1/2] Allow QEMUMachine to override reset
	sequencing
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Gibson <david@gibson.dropbear.id.au>, agraf@suse.de, Anthony Liguori <anthony@codemonkey.ws>, qemu-devel@nongnu.org

Il 02/08/2012 05:50, Benjamin Herrenschmidt ha scritto:
> 
>> >  This sort of stuff is either
>> > (1) hard coded in a firmware/flashrom or (2) built dynamically in
>> > firmware.  Let's not pretend like we're doing this because it's needed
>> > for real hardware.
> Doesn't matter, we do things like -kernel which means pre-loading the
> kernel from qemu, even on x86. That doesn't match real HW either, but
> it's convenient to have. But overall there are real HW reasons to
> control the reset as well so the hook makes sense both ways.

On x86 we do not pre-load the kernel.  Neither the kernel/initramfs and
the option ROM that loads the kernel are written in memory, they are
passed to the guest via fw_cfg.  Then the option ROM is loaded by the
BIOS, and loads the kernel/initramfs.

Paolo