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

from [Keir Fraser] [Permanent Link][Original]
To: Jan Beulich <JBeulich@xxxxxxxxxx>, Ross Philipson <Ross.Philipson@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] Enble 6 argument hypercalls for HVMs
From: Keir Fraser <keir@xxxxxxx>
Date: Wed, 15 Dec 2010 10:06:16 +0000
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] [PATCH] Enble 6 argument hypercalls for HVMs
User-agent: Microsoft-Entourage/12.27.0.100910 
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
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel



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