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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Nicholas Piggin <npiggin@gmail.com>,
	Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com
Subject: [PATCH v3 0/3] KASAN for powerpc/32
Date: Sat, 12 Jan 2019 11:16:33 +0000 (UTC)	[thread overview]
Message-ID: <cover.1547289808.git.christophe.leroy@c-s.fr> (raw)

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


             reply	other threads:[~2019-01-12 11:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-12 11:16 Christophe Leroy [this message]
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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