[hppa-linux] syscall work

[Bjorn Helgaas]

Cary Coutant wrote
>
>I'd suggest *not* using the same gateway page address as HP-UX. If you 
>do, you won't be able to develop a later kernel extension to support 
>HP-UX binaries, unless you allocate syscall numbers carefully.

If Linux uses a different gateway page address than HP-UX (which I
think is a good idea), why not use a strategy like that used for
64-bit HP-UX apps, where the kernel supplies the address in a
register at application startup?