Messages in this thread | | | From | Christophe Leroy <> | Date | Mon, 24 Apr 2017 15:48:33 +0200 | Subject | [PATCH v3 0/3] powerpc/mm: Fix kernel protection and implement CONFIG_DEBUG_RODATA on PPC32 |
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This patch set implements CONFIG_DEBUG_RODATA on Powerpc32 after fixing a few issues related to kernel code page protection.
Changes in v2: Instead of making the entire kernel RW to patch code in ftrace, we now only change the rights on the page to be modified
Changes in v3: Changing the rights is performed in patch_instruction() instead of being done only in ftrace, so that other functionnalities like jump_label also works.
Christophe Leroy (3): powerpc/mm: Ensure change_page_attr() doesn't invalidate pinned TLBs powerpc/mm: Fix kernel RAM protection after freeing unused memory on PPC32 powerpc/mm: Implement CONFIG_DEBUG_RODATA on PPC32
arch/powerpc/Kconfig.debug | 11 ++++++ arch/powerpc/include/asm/pgtable.h | 8 +++++ arch/powerpc/lib/code-patching.c | 9 +++++ arch/powerpc/mm/init_32.c | 3 +- arch/powerpc/mm/mem.c | 1 + arch/powerpc/mm/mmu_decl.h | 3 ++ arch/powerpc/mm/pgtable_32.c | 69 ++++++++++++++++++++++++++++++++++---- 7 files changed, 96 insertions(+), 8 deletions(-)
-- 2.12.0
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