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Re: [Xen-devel] [PATCH] make shared_info architecture independent

To: "He, Qing" <qing.he@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
From: Keir Fraser <keir@xxxxxxxxxxxxx>
Date: Fri, 01 Dec 2006 08:04:45 +0000
Cc: "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>
Delivery-date: Fri, 01 Dec 2006 00:04:46 -0800
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Thread-index: AccVGu7nChRh+annQ3K+gw6B+Sr5ogABG3+C
Thread-topic: [Xen-devel] [PATCH] make shared_info architecture independent

On 1/12/06 7:33 am, "He, Qing" <qing.he@xxxxxxxxx> wrote:

> This patch changes the structure of shared_info and vcpu_info, so that
> its members (event channel related flags) have the same offset in
> x86_32/x86_64 environment. This modification enables 32bit PV-on-HVM
> driver to run transparently on both 32bit and 64bit hypervisor.

Breaks ABI compatibility, and Jan Beulich's PV-PAE-on-64 patches can be
extended for the HVM case.

 -- Keir


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