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Re: [Xen-devel] [PATCH v8 15/15] xen: add new Xen cpuid node for max address width info

Hi Juergen,

On 20/09/17 07:34, Juergen Gross wrote:
On very large hosts a guest needs to know whether it will have to
handle frame numbers larger than 32 bits in order to select the
appropriate grant interface version.

Can you explain why you decided to have an arch specific interface rather than generic one?

On Arm, we would likely need to make same decision for large hosts.


Julien Grall

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