tree a99df58800151b3503a24424550fad55c160b6e1
parent 1a917bb549deb0b6bcb0321db22e9c27525a1e3d
author Paul Mackerras <paulus@samba.org> 1239038470 +0000
committer Paul Mackerras <paulus@samba.org> 1239081541 +1000

powerpc: Fix oops when loading modules

This fixes a problem reported by Sean MacLennan where loading any
module would cause an oops.  We weren't marking the pages containing
the module text as having hardware execute permission, due to a bug
introduced in commit 8d1cf34e ("powerpc/mm: Tweak PTE bit combination
definitions"), hence trying to execute the module text caused an
exception on processors that support hardware execute permission.

This adds _PAGE_HWEXEC to the definitions of PAGE_KERNEL_X and
PAGE_KERNEL_ROX to fix this problem.

Reported-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>