Re: [uml-devel] User Mode Linux still doesn't build in 2.6.23-final.

Andi Kleen
2007-10-23T12:55:46Z

Ingo Molnar <mingo@elte.hu> writes:
>
> the 'fastcall removal' changes to paravirt.c were over-eager: they
> removed fastcall annotations from functions that are (or might be)
> implemented in assembly. So if someone changes the compiler model,
> such as -pg which disables regparm, the kernel breaks in nasty ways.

It would be probably better to just not disable -mregparms. I don't
think the compiler forces this. And e.g. on x86-64 regparms & -pg
work just fine, why should it not on i386?

> so this patch adds back fastcall annotations. This serves as
> documentation for assembly calling-convention dependencies as
> well.

You should rename it then to "asmcall" or something.

-Andi