Re: [Xen-devel] Re: [PATCH] Linux: 6 arguments hypercall v3

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

On Mon, 2011-06-27 at 21:19 +0100, James wrote:
> On Fri, Jun 24, 2011 at 03:43:18PM -0700, Jeremy Fitzhardinge wrote:
> > Does it have to?  Couldn't it take a pointer to a struct or something?
> 
> Yes we could change the API, make sure the struct is visible on all
> CPUs,

FWIW the struct only needs to be visible on the CPU actually making the
hypercall. Many (most?) Xen hypercalls take a pointer to an argument
structure in this way.

Ian.


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