Re: [Xen-devel] [PATCH] Allow direct hypercalls

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 30/4/08 13:56, "john.levon@xxxxxxx" <john.levon@xxxxxxx> wrote:

> # HG changeset patch
> # User john.levon@xxxxxxx
> # Date 1209521783 25200
> # Node ID 9a5c6e3620d83f9354e3eedbc4ef24a7a5ad752e
> # Parent  f477f895f78752bb9fa2e6ee6c1d09b6a8cd3230
> Allow direct hypercalls
> 
> For PV guests, there's no reason to force use of the indirect hypercall
> mechanism. Allow it. Also allow TRAP_INSTR to be used from assembly.
> 
> Signed-off-by: John Levon <john.levon@xxxxxxx>

Well, I suppose there is no reason. But since the instructions are not going
to change you could just as well just open-code them, or define your own
macro. _ASM isn't even a macro name that we use anywhere else in the public
headers.

 -- Keir



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