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Subject[RFC PATCH v2 0/3] KASAN for nohash PPC32
Date
This serie adds KASAN support to nohash PPC32

Tested on 8xx

Changes in v2:
- Rebased.
- Using __set_pte_at() to build the early table.
- Worked around and got rid of the patch adding asm/page.h in asm/pgtable-types.h
==> might be fixed independently but needed for this serie.

In principle, this should also work on the 603. For now I have not been
able to boot, it stops before early console is active, so I'm quite blind at the
moment and don't really know what's wrong. Any idea ?

For hash32 (not 603), it cannot work as is because due to HASHPTE flag, we
can't use the same pagetable for several PGD entries.

Christophe Leroy (3):
powerpc/mm: prepare kernel for KAsan on PPC32
powerpc/32: Move early_init() in a separate file
powerpc/nohash32: Add KASAN support

arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/kasan.h | 22 +++++++++
arch/powerpc/include/asm/nohash/32/pgtable.h | 2 +
arch/powerpc/include/asm/ppc_asm.h | 5 ++
arch/powerpc/include/asm/setup.h | 5 ++
arch/powerpc/include/asm/string.h | 14 ++++++
arch/powerpc/kernel/Makefile | 5 +-
arch/powerpc/kernel/cputable.c | 4 +-
arch/powerpc/kernel/early_32.c | 35 +++++++++++++
arch/powerpc/kernel/setup-common.c | 2 +
arch/powerpc/kernel/setup_32.c | 31 ++----------
arch/powerpc/lib/Makefile | 2 +
arch/powerpc/lib/copy_32.S | 9 ++--
arch/powerpc/mm/Makefile | 3 ++
arch/powerpc/mm/dump_linuxpagetables.c | 8 +++
arch/powerpc/mm/kasan_init.c | 73 ++++++++++++++++++++++++++++
arch/powerpc/mm/mem.c | 4 ++
17 files changed, 191 insertions(+), 34 deletions(-)
create mode 100644 arch/powerpc/include/asm/kasan.h
create mode 100644 arch/powerpc/kernel/early_32.c
create mode 100644 arch/powerpc/mm/kasan_init.c

--
2.13.3

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