Re: compat syscall args

[Anton Blanchard]

> It would be better to do this consistently over all architectures
> and do the sign extension (which is much less common than zero
> extension) always in C code. Then when someone adds a new compat
> handler the chances are high that it will just work over multiple
> architectures (ok minus s390) without much more changes. 

On ppc64 we now zero extend all arguments. I too would like to see the
sign extension done in the common compat code, at the moment we have to
be careful to do it before calling compat code.

Anton
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