From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1MxLvz-0006s8-8u
	for qemu-devel@nongnu.org; Mon, 12 Oct 2009 10:31:35 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1MxLvu-0006oc-Iv
	for qemu-devel@nongnu.org; Mon, 12 Oct 2009 10:31:34 -0400
Received: from [199.232.76.173] (port=55349 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1MxLvu-0006oO-8g
	for qemu-devel@nongnu.org; Mon, 12 Oct 2009 10:31:30 -0400
Received: from mail-fx0-f214.google.com ([209.85.220.214]:47152)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <anthony@codemonkey.ws>) id 1MxLvt-0007ZY-Ti
	for qemu-devel@nongnu.org; Mon, 12 Oct 2009 10:31:30 -0400
Received: by fxm10 with SMTP id 10so8127939fxm.8
	for <qemu-devel@nongnu.org>; Mon, 12 Oct 2009 07:31:29 -0700 (PDT)
Message-ID: <4AD33DBA.5070106@codemonkey.ws>
Date: Mon, 12 Oct 2009 09:31:22 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
MIME-Version: 1.0
Subject: Re: [Qemu-devel] Re: [PATCH 2/3] qemu: make cirrus init value pci
	spec compliant
References: <20091008160623.GA13710@redhat.com>
	<4ACE0FC6.3050908@redhat.com>	<20091008184011.GA6576@shareable.org>	<20091011133626.GA10229@redhat.com>	<20091011134559.GN16702@redhat.com>	<20091011135240.GA10277@redhat.com>	<20091011135748.GO16702@redhat.com>	<20091011143535.GA10401@redhat.com>	<20091011143946.GP16702@redhat.com>
	<4AD332D8.8080903@us.ibm.com> <20091012142129.GE3026@redhat.com>
In-Reply-To: <20091012142129.GE3026@redhat.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Gleb Natapov <gleb@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, "Michael S. Tsirkin" <mst@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, kvm-devel <kvm@vger.kernel.org>, Avi Kivity <avi@redhat.com>

Gleb Natapov wrote:
> On Mon, Oct 12, 2009 at 08:44:56AM -0500, Anthony Liguori wrote:
>   
>> Gleb Natapov wrote
>>     
>>>> BTW, I don't think it's write-protected and it probably should be?
>>>>
>>>>         
>>> AFAIR it is not writable on plain qemu.
>>>       
>> KVM wants it to be writable for the TPR optimization.  Historically,
>>     
> I don't think so. TPR will work after BIOS will be shadowed. This is simply
> KVM shortcoming.
>
>   
>> it was read-only in QEMU but it changed to read-write in order to
>>     
> I just checked. It is still read-only in QEMU _before_ BIOS is shadowed.
>
>   
>> fake coreboot into thinking that the bios implemented PMM which it
>> doesn't.
>>     
> What is PMM? Post memory manager? How is it related?
>   

I was thinking of option rom memory.  BIOS memory is still read-only.

Regards,

Anthony Liguori