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xen-devel
Re: [Xen-devel] [patch] ACM ops interface
On 8 Jun 2006, at 16:01, Hollis Blanchard wrote:
If the ACM ops were always passed in a union, we could replace the
first
switch with a single copy_from_user(), and also guarantee that
"interface_version" is always in the right place (it's only there
coincidentally now). What do you think?
The interface was deliberately changed away from that style for
consistency with other hypercalls. Also to allow larger argument
structures to be added to the interface later without breaking backward
compatibility (inflating the size of the union).
-- Keir
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