| Message ID | 20210615014705.2234866-1-dja@axtens.net (mailing list archive) |
|---|---|
| Headers | show |
| Series | KASAN core changes for ppc64 radix KASAN | expand |
[+Cc Andrey] On Tue, 15 Jun 2021 at 03:47, Daniel Axtens <dja@axtens.net> wrote: > > 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 think this is reasonable. I'd suggest just sending non-ppc patches separately (i.e. split the series explicitly) to KASAN maintainers, and ensure to Cc Andrew, too. Just point at this series to illustrate how it'll be used. I think the patches are fine, but I'm not entirely sure about the current placements of kasan_arch_is_ready(), so hopefully Andrey can also have a look. > 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 ^^ Up to here could be a separate series to go through -mm. > kasan: Document support on 32-bit powerpc ^^ The Documentation changes are minimal and not just confined to kasan.rst it seems. In fact your "powerpc: Book3S .." patch changes Documentation more. So you could just take "kasan: Document support on 32-bit powerpc" through ppc tree as well. > powerpc/mm/kasan: rename kasan_init_32.c to init_32.c > [RFC] powerpc: Book3S 64-bit outline-only KASAN support
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