On Fri, Jan 18, 2019 at 7:50 PM Andy Lutomirski [off-list ref] wrote:

On Fri, Jan 18, 2019 at 8:25 AM Arnd Bergmann [off-list ref] wrote:

I have a patch that I'll send soon to make x32 use its own table.  As
far as I'm concerned, 547 is *it*.  548 is just a normal number and is
not special.  But let's please not reuse 512..547 for other purposes
on x86 variants -- that way lies even more confusion, IMO.

(trimming Cc list, as this is getting a little off-topic most most)

Just so I understand: do you mean duplicating the .tbl file, or just
the resulting table of entry points?

In either way, how will that work with the new io_uring_setup()
system call that will have to use the compat entry point?
Are you planning to use the same syscall number as x86_64
but point it to the compat function, or do we still need a new
syscall number for x32 in the regular range?

       Arnd