tree 968e11ff8ad806d4b2e4105c181460033e295df9
parent 799010244685334b34e674d354a1a71a3a6b6148
author Oliver O'Halloran <oohall@gmail.com> 1467683001 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1467727134 +1000

powerpc/mm: Add a parameter to disable 1TB segs

This patch adds the kernel command line parameter "no_tb_segs" which
forces the kernel to use 256MB rather than 1TB segments. Forcing the use
of 256MB segments makes it considerably easier to test code that depends
on an SLB miss occurring.

Suggested-by: Michael Neuling <mikey@neuling.org>
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>