From mboxrd@z Thu Jan  1 00:00:00 1970
From: Anthony Liguori <anthony@codemonkey.ws>
Subject: Re: [Qemu-devel] Re: [PATCH 2/3] qemu: make cirrus init value pci
 spec compliant
Date: Mon, 12 Oct 2009 09:31:22 -0500
Message-ID: <4AD33DBA.5070106@codemonkey.ws>
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Cc: Anthony Liguori <aliguori@us.ibm.com>,
	"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
	Avi Kivity <avi@redhat.com>, kvm-devel <kvm@vger.kernel.org>,
	"Michael S. Tsirkin" <mst@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
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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