linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH v2 0/4] KASAN for powerpc64 radix, plus generic mm change
@ 2019-12-10  4:47 Daniel Axtens
  2019-12-10  4:47 ` [PATCH v2 1/4] mm: define MAX_PTRS_PER_{PTE,PMD,PUD} Daniel Axtens
                   ` (3 more replies)
  0 siblings, 4 replies; 22+ messages in thread
From: Daniel Axtens @ 2019-12-10  4:47 UTC (permalink / raw)
  To: linux-kernel, linux-mm, linuxppc-dev, linux-s390, linux-xtensa,
	linux-arch, linux-arm-kernel, kasan-dev, christophe.leroy,
	aneesh.kumar, bsingharora
  Cc: Daniel Axtens

Building on the work of Christophe, Aneesh and Balbir, I've ported
KASAN to 64-bit Book3S kernels running on the Radix MMU.

This provides full inline instrumentation on radix, but does require
that you be able to specify the amount of physically contiguous memory
on the system at compile time. More details in patch 4.

The big change from v1 is the introduction of tree-wide(ish)
MAX_PTRS_PER_{PTE,PMD,PUD} macros in preference to the previous
approach, which was for the arch to override the page table array
definitions with their own. (And I squashed the annoying intermittent
crash!)

Apart from that there's just a lot of cleanup. Christophe, I've
addressed most of what you asked for and I will reply to your v1
emails to clarify what remains unchanged.

Regards,
Daniel

Daniel Axtens (4):
  mm: define MAX_PTRS_PER_{PTE,PMD,PUD}
  kasan: use MAX_PTRS_PER_* for early shadow
  kasan: Document support on 32-bit powerpc
  powerpc: Book3S 64-bit "heavyweight" KASAN support

 Documentation/dev-tools/kasan.rst             |   7 +-
 Documentation/powerpc/kasan.txt               | 112 ++++++++++++++++++
 arch/arm64/include/asm/pgtable-hwdef.h        |   3 +
 arch/powerpc/Kconfig                          |   3 +
 arch/powerpc/Kconfig.debug                    |  21 ++++
 arch/powerpc/Makefile                         |  11 ++
 arch/powerpc/include/asm/book3s/64/hash.h     |   4 +
 arch/powerpc/include/asm/book3s/64/pgtable.h  |   7 ++
 arch/powerpc/include/asm/book3s/64/radix.h    |   5 +
 arch/powerpc/include/asm/kasan.h              |  20 +++-
 arch/powerpc/kernel/process.c                 |   8 ++
 arch/powerpc/kernel/prom.c                    |  59 ++++++++-
 arch/powerpc/mm/kasan/Makefile                |   3 +-
 .../mm/kasan/{kasan_init_32.c => init_32.c}   |   0
 arch/powerpc/mm/kasan/init_book3s_64.c        |  67 +++++++++++
 arch/s390/include/asm/pgtable.h               |   3 +
 arch/x86/include/asm/pgtable_types.h          |   5 +
 arch/xtensa/include/asm/pgtable.h             |   1 +
 include/asm-generic/pgtable-nop4d-hack.h      |   9 +-
 include/asm-generic/pgtable-nopmd.h           |   9 +-
 include/asm-generic/pgtable-nopud.h           |   9 +-
 include/linux/kasan.h                         |   6 +-
 mm/kasan/init.c                               |   6 +-
 23 files changed, 353 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/powerpc/kasan.txt
 rename arch/powerpc/mm/kasan/{kasan_init_32.c => init_32.c} (100%)
 create mode 100644 arch/powerpc/mm/kasan/init_book3s_64.c

-- 
2.20.1


^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2019-12-12 13:41 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-10  4:47 [PATCH v2 0/4] KASAN for powerpc64 radix, plus generic mm change Daniel Axtens
2019-12-10  4:47 ` [PATCH v2 1/4] mm: define MAX_PTRS_PER_{PTE,PMD,PUD} Daniel Axtens
2019-12-10  6:35   ` Christophe Leroy
2019-12-10  9:35   ` Balbir Singh
2019-12-10 10:39   ` kbuild test robot
2019-12-10  4:47 ` [PATCH v2 2/4] kasan: use MAX_PTRS_PER_* for early shadow Daniel Axtens
2019-12-10  6:40   ` Christophe Leroy
2019-12-10  9:36   ` Balbir Singh
2019-12-10 14:39     ` Christophe Leroy
2019-12-10  4:47 ` [PATCH v2 3/4] kasan: Document support on 32-bit powerpc Daniel Axtens
2019-12-10  6:40   ` Christophe Leroy
2019-12-10  4:47 ` [PATCH v2 4/4] powerpc: Book3S 64-bit "heavyweight" KASAN support Daniel Axtens
2019-12-10  7:21   ` Christophe Leroy
2019-12-12 13:41     ` Daniel Axtens
2019-12-10 10:57   ` Balbir Singh
2019-12-11  5:21     ` Daniel Axtens
2019-12-11  8:57       ` Balbir Singh
2019-12-11 14:24         ` Daniel Axtens
2019-12-12  7:42           ` Balbir Singh
2019-12-12  9:38             ` Christophe Leroy
2019-12-12  9:56           ` Andrey Ryabinin
2019-12-10 11:20   ` kbuild test robot

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).