On Sun, Feb 11, 2007 at 04:33:41PM +0100, David Woodhouse wrote:

On Sat, 2007-02-10 at 21:34 +0000, Ralf Baechle wrote:

quoted

Unfortunately struct epoll_event contains a gap so it bets on identical
padding rules between native and compat ABI and anyway, padding is wasted
space so the struct members should have been swapped when this structure
was created.  Oh well, too late. 

Indeed. That was the example I was thinking of when I suggested the "no
new syscalls without _simultaneous_ compat version" rule.

The need for a compat ABI is not always obvious.

  Ralf