| Date | Tue, 19 May 2015 16:27:41 +0100 | From | David Vrabel <> | Subject | Re: [Xen-devel] [RFC 17/23] xen/grant-table: Make it running on 64KB granularity |
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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 <david.vrabel@citrix.com>
David
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