Re: [Xen-devel] 32/64-bit hypercall interface

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 28 Sep 2005, at 22:36, Hollis Blanchard wrote:

> I was looking at the definition of privcmd_hypercall:
> typedef struct privcmd_hypercall
> {
>     unsigned long op;
>     unsigned long arg[5];
> } privcmd_hypercall_t;
>
> For ppc64, we are using 32-bit management tools, so this is a problem: 
> they
> will create structs where long is 32 bits, and the (64-bit) kernel and
> hypervisor will expect structs where long is 64 bits.
We want the args to be 'machine-register sized' which is why they are 
longs. Why use 32-bit tools on 64-bit hypervisor?
 -- Keir


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