[PATCH] powerpc: Fix oops when loading modules

[Geert Uytterhoeven]

On Tue, 7 Apr 2009, Paul Mackerras wrote:
> 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 at pikatech.com>
> Signed-off-by: Paul Mackerras <paulus at samba.org>

Tested-by: Geert Uytterhoeven <Geert.Uytterhoeven at sonycom.com>
(on Sequoia)

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
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