From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Sathvika Vasireddy <sv@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH v1 0/3] powerpc/objtool: First step towards uaccess validation (v1)
Date: Fri, 16 Jun 2023 15:47:49 +0200 [thread overview]
Message-ID: <cover.1686922583.git.christophe.leroy@csgroup.eu> (raw)
This RFC is a first step towards the validation of userspace accesses.
For the time being it targets only PPC32 and includes hacks directly in
core part of objtool.
It doesn't yet include handling of uaccess at all but is a first step
to support objtool validation.
Assembly files have been kept aside as they require a huge work before
being ready for objtool validation and are not directly relevant for
uaccess validation.
Please have a look and hold hand if I'm going in the wrong direction.
For the few hacks done directly in the core part of objtool don't
hesitate to suggest ways to make it more generic.
Christophe Leroy (3):
Revert "powerpc/bug: Provide better flexibility to
WARN_ON/__WARN_FLAGS() with asm goto"
powerpc: Mark all .S files invalid for objtool
powerpc: WIP draft support to objtool check
arch/powerpc/Kconfig | 1 +
arch/powerpc/boot/Makefile | 17 +++++
arch/powerpc/crypto/Makefile | 13 ++++
arch/powerpc/include/asm/book3s/64/kup.h | 2 +-
arch/powerpc/include/asm/bug.h | 67 +++----------------
arch/powerpc/include/asm/extable.h | 14 ----
arch/powerpc/include/asm/ppc_asm.h | 11 ++-
arch/powerpc/kernel/Makefile | 44 ++++++++++++
arch/powerpc/kernel/misc_32.S | 2 +-
arch/powerpc/kernel/trace/Makefile | 4 ++
arch/powerpc/kernel/traps.c | 9 +--
arch/powerpc/kernel/vdso/Makefile | 11 +++
arch/powerpc/kexec/Makefile | 2 +
arch/powerpc/kvm/Makefile | 13 ++++
arch/powerpc/lib/Makefile | 25 +++++++
arch/powerpc/mm/book3s32/Makefile | 3 +
arch/powerpc/mm/nohash/Makefile | 3 +
arch/powerpc/perf/Makefile | 2 +
arch/powerpc/platforms/44x/Makefile | 2 +
arch/powerpc/platforms/52xx/Makefile | 3 +
arch/powerpc/platforms/83xx/Makefile | 2 +
arch/powerpc/platforms/cell/spufs/Makefile | 3 +
arch/powerpc/platforms/pasemi/Makefile | 2 +
arch/powerpc/platforms/powermac/Makefile | 3 +
arch/powerpc/platforms/powernv/Makefile | 3 +
arch/powerpc/platforms/ps3/Makefile | 2 +
arch/powerpc/platforms/pseries/Makefile | 2 +
arch/powerpc/purgatory/Makefile | 3 +
arch/powerpc/sysdev/Makefile | 3 +
arch/powerpc/xmon/Makefile | 3 +
scripts/Makefile.lib | 2 +-
tools/objtool/arch/powerpc/decode.c | 60 +++++++++++++++--
.../arch/powerpc/include/arch/special.h | 2 +-
tools/objtool/arch/powerpc/special.c | 44 +++++++++++-
tools/objtool/check.c | 29 ++++----
tools/objtool/include/objtool/elf.h | 1 +
tools/objtool/include/objtool/special.h | 2 +-
.../powerpc/primitives/asm/extable.h | 1 -
38 files changed, 311 insertions(+), 104 deletions(-)
delete mode 120000 tools/testing/selftests/powerpc/primitives/asm/extable.h
--
2.40.1
next reply other threads:[~2023-06-16 14:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-16 13:47 Christophe Leroy [this message]
2023-06-16 13:47 ` [RFC PATCH v1 1/3] Revert "powerpc/bug: Provide better flexibility to WARN_ON/__WARN_FLAGS() with asm goto" Christophe Leroy
2023-06-20 5:21 ` Naveen N Rao
2023-06-20 7:10 ` Peter Zijlstra
2023-06-16 13:47 ` [RFC PATCH v1 2/3] powerpc: Mark all .S files invalid for objtool Christophe Leroy
2023-06-20 6:04 ` Naveen N Rao
2023-06-20 6:15 ` Christophe Leroy
2023-06-20 6:40 ` Naveen N Rao
2023-06-16 13:47 ` [RFC PATCH v1 3/3] powerpc: WIP draft support to objtool check Christophe Leroy
2023-06-16 14:43 ` Peter Zijlstra
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