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* [PATCH v3 0/3] KASAN for powerpc/32
@ 2019-01-12 11:16 Christophe Leroy
  2019-01-12 11:16 ` [PATCH v3 1/3] powerpc/mm: prepare kernel for KAsan on PPC32 Christophe Leroy
                   ` (2 more replies)
  0 siblings, 3 replies; 19+ messages in thread
From: Christophe Leroy @ 2019-01-12 11:16 UTC (permalink / raw)
  To: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Nicholas Piggin, Aneesh Kumar K.V, Andrey Ryabinin,
	Alexander Potapenko, Dmitry Vyukov
  Cc: linux-mm, linuxppc-dev, linux-kernel, kasan-dev

This serie adds KASAN support to powerpc/32

Tested on nohash/32 (8xx) and book3s/32 (mpc832x ie 603)

Changes in v3:
- Removed the printk() in kasan_early_init() to avoid build failure (see https://github.com/linuxppc/issues/issues/218)
- Added necessary changes in asm/book3s/32/pgtable.h to get it work on powerpc 603 family
- Added a few KASAN_SANITIZE_xxx.o := n to successfully boot on powerpc 603 family

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 not needed for this serie.

For book3s/32 (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/32: Add KASAN support

 arch/powerpc/Kconfig                         |  1 +
 arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
 arch/powerpc/include/asm/kasan.h             | 24 ++++++++++
 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                 |  6 ++-
 arch/powerpc/kernel/cputable.c               |  4 +-
 arch/powerpc/kernel/early_32.c               | 36 ++++++++++++++
 arch/powerpc/kernel/prom_init_check.sh       |  1 +
 arch/powerpc/kernel/setup-common.c           |  2 +
 arch/powerpc/kernel/setup_32.c               | 31 ++----------
 arch/powerpc/lib/Makefile                    |  3 ++
 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                 | 72 ++++++++++++++++++++++++++++
 arch/powerpc/mm/mem.c                        |  4 ++
 19 files changed, 198 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


^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2019-01-21 12:37 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-01-12 11:16 [PATCH v3 0/3] KASAN for powerpc/32 Christophe Leroy
2019-01-12 11:16 ` [PATCH v3 1/3] powerpc/mm: prepare kernel for KAsan on PPC32 Christophe Leroy
2019-01-14  9:34   ` Dmitry Vyukov
2019-01-15  7:27     ` Christophe Leroy
2019-01-15 11:14       ` Dmitry Vyukov
2019-01-15 17:07         ` Andrey Ryabinin
2019-01-15 17:10           ` Dmitry Vyukov
2019-01-15 17:25             ` Christophe Leroy
2019-01-16 10:03               ` Dmitry Vyukov
2019-01-12 11:16 ` [PATCH v3 2/3] powerpc/32: Move early_init() in a separate file Christophe Leroy
2019-01-12 11:16 ` [PATCH v3 3/3] powerpc/32: Add KASAN support Christophe Leroy
2019-01-15 17:23   ` Andrey Ryabinin
2019-01-21  7:17     ` Christophe Leroy
2019-01-21  8:30       ` Dmitry Vyukov
2019-01-21  8:37         ` Christophe Leroy
2019-01-21  9:24           ` Dmitry Vyukov
2019-01-21  9:30             ` Christophe Leroy
2019-01-21 10:36     ` Christophe Leroy
2019-01-21 12:33       ` Dmitry Vyukov

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