tree e88e57ce951eeaf2780a27787ad712a09eb8be7e
parent 8bc03e8f3a334e09e89a7dffb486ee97a5ce84ae
author Linus Torvalds <torvalds@linux-foundation.org> 1318865064 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1318865064 -0700

Avoid using variable-length arrays in kernel/sys.c

The size is always valid, but variable-length arrays generate worse code
for no good reason (unless the function happens to be inlined and the
compiler sees the length for the simple constant it is).

Also, there seems to be some code generation problem on POWER, where
Henrik Bakken reports that register r28 can get corrupted under some
subtle circumstances (interrupt happening at the wrong time?).  That all
indicates some seriously broken compiler issues, but since variable
length arrays are bad regardless, there's little point in trying to
chase it down.

"Just don't do that, then".

Reported-by: Henrik Grindal Bakken <henribak@cisco.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>