Le 18/05/2022 à 12:03, Paul Mackerras a écrit :
> This patch series implements KASAN on 64-bit POWER with radix MMU,
> such as POWER9 or POWER10. Daniel Axtens posted previous versions of
> these patches, but is no longer working on KASAN, and I have been
> asked to get them ready for inclusion.
>
> Because of various technical difficulties, mostly around the need to
> allow for code that runs in real mode, we only support "outline" mode
> (as opposed to "inline" mode), where the compiler adds a call to
> a checking procedure before every store to memory.
>
> This series has known deficiencies, specifically that the kernel will
> crash on boot on a HPT system, and that out-of-bounds accesses to
> module global data are not caught (which leads to one of the KASAN
> tests failing).
>
> v2: Split the large patch 3/3 of the previous series into three
> patches and addressed review comments; put the generic documentation
> changes in a separate patch at the end of the series; removed the RFC
> tag.
>
> Comments welcome.
The series looks good to me.
Maybe patch 3 should go after patches 4 and 5 which are preparation patches.
Christophe
>
> Paul.
>
> Documentation/dev-tools/kasan.rst | 7 +-
> Documentation/powerpc/kasan.txt | 58 ++++++++++++
> arch/powerpc/Kconfig | 5 +-
> arch/powerpc/Kconfig.debug | 3 +-
> arch/powerpc/include/asm/book3s/64/hash.h | 4 +
> arch/powerpc/include/asm/book3s/64/pgtable.h | 3 +
> arch/powerpc/include/asm/book3s/64/radix.h | 12 ++-
> arch/powerpc/include/asm/interrupt.h | 52 ++++++++---
> arch/powerpc/include/asm/kasan.h | 22 +++++
> arch/powerpc/kernel/Makefile | 11 +++
> arch/powerpc/kernel/smp.c | 22 ++---
> arch/powerpc/kernel/traps.c | 6 +-
> arch/powerpc/kexec/Makefile | 2 +
> arch/powerpc/kvm/Makefile | 5 +
> arch/powerpc/lib/Makefile | 3 +
> 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 | 103
> +++++++++++++++++++++
> arch/powerpc/mm/ptdump/ptdump.c | 3 +-
> arch/powerpc/platforms/Kconfig.cputype | 1 +
> arch/powerpc/platforms/powernv/Makefile | 8 ++
> arch/powerpc/platforms/powernv/smp.c | 2 +-
> arch/powerpc/platforms/pseries/Makefile | 6 ++
> arch/powerpc/sysdev/xics/xics-common.c | 4 +-
> arch/powerpc/sysdev/xive/common.c | 4 +-
> 26 files changed, 320 insertions(+), 38 deletions(-)
