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Re: [PATCH 4/5] xen/memory: Fix acquire_resource size semantics

Hi Andrew,

On 30/07/2020 20:46, Andrew Cooper wrote:
On 30/07/2020 09:31, Paul Durrant wrote:
In between these two hypercalls from the utility, the guest can do a
v1=>v2 or v2=>v1 switch and make the resource spontaneously appear or

This can only happen on platform where grant-table v2 is enabled. Where this is not enabled (e.g Arm), then I think we want to return 0 as there is nothing to map.


Julien Grall



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