Building on the work of Christophe, Aneesh and Balbir, I've ported
KASAN to 64-bit Book3S kernels running on the Radix MMU.
I've been trying this for a while, but we keep having collisions
between the kasan code in the mm tree and the code I want to put in to
the ppc tree. So my aim here is for patches 1 through 4 or 1 through 5
to go in via the mm tree. I will then propose the powerpc changes for
a later cycle. (I have attached them to this series as an RFC, and
there are still outstanding review comments I need to attend to.)
v12 applies to next-20210611. There should be no noticable changes to
other platforms.
Kind regards,
Daniel
Daniel Axtens (6):
kasan: allow an architecture to disable inline instrumentation
kasan: allow architectures to provide an outline readiness check
kasan: define and use MAX_PTRS_PER_* for early shadow tables
kasan: Document support on 32-bit powerpc
powerpc/mm/kasan: rename kasan_init_32.c to init_32.c
[RFC] powerpc: Book3S 64-bit outline-only KASAN support
Documentation/dev-tools/kasan.rst | 7 +-
Documentation/powerpc/kasan.txt | 58 +++++++++++
arch/powerpc/Kconfig | 4 +-
arch/powerpc/Kconfig.debug | 3 +-
arch/powerpc/include/asm/book3s/64/hash.h | 4 +
arch/powerpc/include/asm/book3s/64/pgtable.h | 4 +
arch/powerpc/include/asm/book3s/64/radix.h | 13 ++-
arch/powerpc/include/asm/kasan.h | 22 +++++
arch/powerpc/kernel/Makefile | 11 +++
arch/powerpc/kernel/process.c | 16 ++--
arch/powerpc/kvm/Makefile | 5 +
arch/powerpc/mm/book3s64/Makefile | 9 ++
arch/powerpc/mm/kasan/Makefile | 3 +-
.../mm/kasan/{kasan_init_32.c => init_32.c} | 0
arch/powerpc/mm/kasan/init_book3s_64.c | 95 +++++++++++++++++++
arch/powerpc/mm/ptdump/ptdump.c | 20 +++-
arch/powerpc/platforms/Kconfig.cputype | 1 +
arch/powerpc/platforms/powernv/Makefile | 6 ++
arch/powerpc/platforms/pseries/Makefile | 3 +
include/linux/kasan.h | 18 +++-
lib/Kconfig.kasan | 14 +++
mm/kasan/common.c | 4 +
mm/kasan/generic.c | 3 +
mm/kasan/init.c | 6 +-
mm/kasan/kasan.h | 4 +
mm/kasan/shadow.c | 4 +
26 files changed, 316 insertions(+), 21 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
--
2.27.0
