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Re: [Xen-devel] [PATCH] Enble 6 argument hypercalls for HVMs



On 15/12/2010 09:07, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:

>>>> On 14.12.10 at 23:16, Ross Philipson <Ross.Philipson@xxxxxxxxxx> wrote:
>> Enable 6 argument hypercalls for HVMs. The hypercall code handles a sixth
>> argument in EBP or R9 but the HVM code is not passing the value.
>> 
>> Signed-off-by: Ross Philipson <ross.philipson@xxxxxxxxxx>
> 
> I'm curious what hypercall there is that takes 6 arguments,
> particularly on 64-bit (where the maximum so far is 4).

The v4v hypercalls in XenClient (not as yet submitted upstream) take 6
arguments. Multicalls also need fixing up for a sixth argument, making
everything consistent with existing PV hypercall logic.

 -- Keir

> Jan
> 
> 
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