From: Daniel Axtens <dja@axtens.net>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linuxppc-dev@lists.ozlabs.org, kasan-dev@googlegroups.com,
christophe.leroy@c-s.fr, aneesh.kumar@linux.ibm.com,
bsingharora@gmail.com
Cc: Daniel Axtens <dja@axtens.net>
Subject: [PATCH v8 0/4] KASAN for powerpc64 radix
Date: Thu, 2 Jul 2020 12:54:28 +1000 [thread overview]
Message-ID: <20200702025432.16912-1-dja@axtens.net> (raw)
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.
v8 is just a rebase of v7 on a more recent powerpc/merge and a fixup
of a whitespace error.
Module globals still don't work, but that's due to some 'clever'
renaming of a section that the powerpc module loading code does to
avoid more complicated relocations/tramplines rather than anything to
do with KASAN.
Daniel Axtens (4):
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
powerpc: Book3S 64-bit "heavyweight" KASAN support
Documentation/dev-tools/kasan.rst | 8 +-
Documentation/powerpc/kasan.txt | 122 ++++++++++++++++++
arch/powerpc/Kconfig | 3 +-
arch/powerpc/Kconfig.debug | 23 +++-
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 | 11 +-
arch/powerpc/kernel/Makefile | 2 +
arch/powerpc/kernel/process.c | 16 ++-
arch/powerpc/kernel/prom.c | 76 ++++++++++-
arch/powerpc/mm/kasan/Makefile | 3 +-
.../mm/kasan/{kasan_init_32.c => init_32.c} | 0
arch/powerpc/mm/kasan/init_book3s_64.c | 73 +++++++++++
arch/powerpc/mm/ptdump/ptdump.c | 10 +-
arch/powerpc/platforms/Kconfig.cputype | 1 +
include/linux/kasan.h | 18 ++-
mm/kasan/init.c | 6 +-
19 files changed, 377 insertions(+), 22 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
--
2.25.1
next reply other threads:[~2020-07-02 2:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 2:54 Daniel Axtens [this message]
2020-07-02 2:54 ` [PATCH v8 1/4] kasan: define and use MAX_PTRS_PER_* for early shadow tables Daniel Axtens
2020-07-02 2:54 ` [PATCH v8 2/4] kasan: Document support on 32-bit powerpc Daniel Axtens
2020-07-02 2:54 ` [PATCH v8 3/4] powerpc/mm/kasan: rename kasan_init_32.c to init_32.c Daniel Axtens
2020-07-02 2:54 ` [PATCH v8 4/4] powerpc: Book3S 64-bit "heavyweight" KASAN support Daniel Axtens
2020-07-06 8:29 ` kernel test robot
-- strict thread matches above, loose matches on Subject: below --
2020-03-06 13:33 [PATCH v8 0/4] KASAN for powerpc64 radix Daniel Axtens
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