From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Andrew Morton <akpm@linux-foundation.org>,
Kees Cook <keescook@chromium.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
linux-mm@kvack.org, steven.price@arm.com,
Phong Tran <tranmanphong@gmail.com>,
mark.rutland@arm.com, Greg KH <greg@kroah.com>
Subject: [PATCH v2 0/5] mm: ptdump: Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute
Date: Tue, 30 Jan 2024 11:34:31 +0100 [thread overview]
Message-ID: <cover.1706610398.git.christophe.leroy@csgroup.eu> (raw)
Refer old discussion at https://lore.kernel.org/lkml/20200422152656.GF676@willie-the-truck/T/#m802eaf33efd6f8d575939d157301b35ac0d4a64f
And https://github.com/KSPP/linux/issues/35
This series refactors CONFIG_DEBUG_WX for the 5 architectures
implementing CONFIG_GENERIC_PTDUMP
First rename stuff in ARM which uses similar names while not
implementing CONFIG_GENERIC_PTDUMP.
Then define a generic version of debug_checkwx() that calls
ptdump_check_wx() when CONFIG_DEBUG_WX is set. Call it immediately
after calling mark_rodata_ro() instead of calling it at the end of
every mark_rodata_ro().
Then implement a debugfs attribute that can be used to trigger
a W^X test at anytime and regardless of CONFIG_DEBUG_WX
Changes in v2:
- Fixed a few build failures (patch 1 and 2)
- Added patch 4
- Make the attribute return SUCCESS/FAILURE as suggested by Heiko (patch 5)
Christophe Leroy (5):
arm: ptdump: Rename CONFIG_DEBUG_WX to CONFIG_ARM_DEBUG_WX
arm64, powerpc, riscv, s390, x86: ptdump: Refactor CONFIG_DEBUG_WX
powerpc,s390: ptdump: Define ptdump_check_wx() regardless of
CONFIG_DEBUG_WX
mm: ptdump: Have ptdump_check_wx() return bool
mm: ptdump: add check_wx_pages debugfs attribute
arch/arm/Kconfig.debug | 2 +-
arch/arm/configs/aspeed_g4_defconfig | 2 +-
arch/arm/configs/aspeed_g5_defconfig | 2 +-
arch/arm/include/asm/ptdump.h | 6 +++---
arch/arm/mm/init.c | 2 +-
arch/arm64/include/asm/ptdump.h | 7 -------
arch/arm64/mm/mmu.c | 2 --
arch/arm64/mm/ptdump.c | 11 ++++++++---
arch/powerpc/mm/mmu_decl.h | 6 ------
arch/powerpc/mm/pgtable_32.c | 4 ----
arch/powerpc/mm/pgtable_64.c | 3 ---
arch/powerpc/mm/ptdump/ptdump.c | 21 ++++++++++++++-------
arch/riscv/include/asm/ptdump.h | 22 ----------------------
arch/riscv/mm/init.c | 3 ---
arch/riscv/mm/ptdump.c | 12 ++++++++----
arch/s390/include/asm/ptdump.h | 14 --------------
arch/s390/mm/dump_pagetables.c | 21 +++++++++++----------
arch/s390/mm/init.c | 2 --
arch/x86/include/asm/pgtable.h | 5 ++---
arch/x86/mm/dump_pagetables.c | 20 ++++++++++++++------
arch/x86/mm/init_32.c | 2 --
arch/x86/mm/init_64.c | 2 --
include/linux/ptdump.h | 7 +++++++
init/main.c | 2 ++
mm/ptdump.c | 22 ++++++++++++++++++++++
25 files changed, 95 insertions(+), 107 deletions(-)
delete mode 100644 arch/riscv/include/asm/ptdump.h
delete mode 100644 arch/s390/include/asm/ptdump.h
--
2.43.0
next reply other threads:[~2024-01-30 10:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-30 10:34 Christophe Leroy [this message]
2024-01-30 10:34 ` [PATCH v2 1/5] arm: ptdump: Rename CONFIG_DEBUG_WX to CONFIG_ARM_DEBUG_WX Christophe Leroy
2024-01-30 10:34 ` [PATCH v2 2/5] arm64, powerpc, riscv, s390, x86: ptdump: Refactor CONFIG_DEBUG_WX Christophe Leroy
2024-03-27 14:38 ` Palmer Dabbelt
2024-01-30 10:34 ` [PATCH v2 3/5] powerpc,s390: ptdump: Define ptdump_check_wx() regardless of CONFIG_DEBUG_WX Christophe Leroy
2024-01-30 10:34 ` [PATCH v2 4/5] mm: ptdump: Have ptdump_check_wx() return bool Christophe Leroy
2024-01-30 10:34 ` [PATCH v2 5/5] mm: ptdump: add check_wx_pages debugfs attribute Christophe Leroy
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