Re: [Xen-devel] [PATCH v2] make error codes a formal part of the ABI

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

On Thu, 2015-01-15 at 16:27 +0000, Andrew Cooper wrote:
> On 15/01/15 15:25, Jan Beulich wrote:
> 
> > Now that we have two cases where patches against hvmloader got
> > submitted needing to include the hypervisor's errno.h (for the host's
> > system header not necessarily reflecting the correct numbers), take
> > this as a strong sign that we need to make the error return values part
> > of the hypervisor ABI (which de-fact they've always been).
> > 
> > Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> How do the non XEN_ prefixed E$FOO get generated with this?  All
> "#define XEN_ERRNO(...)" tokenise XEN_## onto the name.

I thought that too at first, but

+#define XEN_ERRNO(name, value) name = XEN_##name,

adds XEN_ on the value, not the name.

Ian.


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