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Re: [Xen-devel] [RFC] Disable xen platform device when it is not needed.

To: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [RFC] Disable xen platform device when it is not needed.
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Fri, 20 Feb 2009 08:33:11 +0000
Cc: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Kouya Shimura <kouya@xxxxxxxxxxxxxx>, James Harper <james.harper@xxxxxxxxxxxxxxxx>
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On 20/02/2009 07:52, "Yuji Shimada" <shimada-yxb@xxxxxxxxxxxxxxx> wrote:

> I will create the patch as follows.
> 
> - Alias the 'platform_flags' byte of the ioport BAR to fixed byte port
>   0x10, and don't remove existing 'platform_flags' byte.
> 
> - Change guest firmware to use new fixed byte port 0x10.
> 
> - Add "xen_platform_pci" option in guest config file.
> 
>     xen_platform_pci=0: Disable xen platform device.
>     xen_platform_pci=1: Enable xen platform device. (default)

Agreed.

 K.



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