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 <smaclen...@pikatech.com>
> Signed-off-by: Paul Mackerras <pau...@samba.org>
Tested-by: Geert Uytterhoeven <geert.uytterhoe...@sonycom.com>
(on Sequoia)
With kind regards,
Geert Uytterhoeven
Software Architect
Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium
Phone: +32 (0)2 700 8453
Fax: +32 (0)2 700 8622
E-mail: geert.uytterhoe...@sonycom.com
Internet: http://www.sony-europe.com/
A division of Sony Europe (Belgium) N.V.
VAT BE 0413.825.160 · RPR Brussels
Fortis · BIC GEBABEBB · IBAN BE41293037680010
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