[Xen-devel] Re: [Xen-changelog] Indirect hypercalls through a hypercall transfer page.

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 8 Feb 2006, at 04:57, Hollis Blanchard wrote:

> > Indirect hypercalls through a hypercall transfer page.
> Sorry, I may have missed some conversation about this...
>
> What is this patch about? I mean I can see how it works, but what is 
> the
> motivation for it?
Allows a different hypercall implementation on platforms where that 
makes sense. For example, we would like to run XenLinux on native by 
running it over a small 'Xen shim' that provides the Xen API but no 
protection or multiplexing. In that case it would be most efficient to 
turn syscall instructions into jumps.
 -- Keir


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