Some powerpc like the 8xx don't have a RW bit in PTE bits but a RO (Read Only) bit. This patch implements the handling of a _PAGE_RO flag to be used in place of _PAGE_RW
Patchset: 1) powerpc32: adds handling of _PAGE_RO 2) powerpc/8xx: use _PAGE_RO instead of _PAGE_RW All changes have been successfully tested on MPC885 Signed-off-by: Christophe Leroy <[email protected]> Tested-by: Christophe Leroy <[email protected]> --- v2 is a complete rework compared to v1 v3 takes into account comments from Scott on v2 v4 simplified pte_update() arch/powerpc/include/asm/pgtable-ppc32.h | 12 +++++++----- arch/powerpc/include/asm/pgtable.h | 7 +++++-- arch/powerpc/include/asm/pte-8xx.h | 9 ++++----- arch/powerpc/include/asm/pte-common.h | 25 +++++++++++++++++-------- arch/powerpc/kernel/head_8xx.S | 3 --- arch/powerpc/mm/gup.c | 2 ++ arch/powerpc/mm/pgtable_32.c | 2 +- 7 files changed, 36 insertions(+), 24 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
