On 14/05/15 18:00, Julien Grall wrote:
> The Xen interface is using 4KB page granularity. This means that each
> grant is 4KB.
>
> The current implementation allocates a Linux page per grant. On Linux
> using 64KB page granularity, only the first 4KB of the page will be
> used.
>
> We could decrease the memory wasted by sharing the page with multiple
> grant. It will require some care with the {Set,Clear}ForeignPage macro.
>
> Note that no changes has been made in the x86 code because both Linux
> and Xen will only use 4KB page granularity.
Reviewed-by: David Vrabel <[email protected]>
David
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