| From: |
| Kefeng Wang <wangkefeng.wang-AT-huawei.com> |
| To: |
| <linux-AT-armlinux.org.uk>, <linux-arm-kernel-AT-lists.infradead.org>, <linux-kernel-AT-vger.kernel.org> |
| Subject: |
| [PATCH Resend v2 0/3] ARM: Support KFENCE feature |
| Date: |
| Mon, 15 Nov 2021 21:48:45 +0800 |
| Message-ID: |
| <20211115134848.171098-1-wangkefeng.wang@huawei.com> |
| Cc: |
| <glider-AT-google.com>, <elver-AT-google.com>, <dvyukov-AT-google.com>, Kefeng Wang <wangkefeng.wang-AT-huawei.com> |
| Archive-link: |
| Article |
This patchset supports Kfence feature, tested the kfence_test on ARM QEMU
with or without ARM_LPAE and all passed.
V2 Resend:
- adjust is_write_fault() position in patch2 not patch3, sugguested Alexander
- Add ACKed from Marco
- rebased on v5.16-rc1
V2:
- drop patch4 in v1, which is used a new way to skip kfence test
see commit c40c6e593bf9 ("kfence: test: fail fast if disabled at boot")
- fix some issue about NO MMU
- drop useless set_memory_valid() under no mmu
- fix implicit declaration of function ‘is_write_fault’ if no mmu
- make KFENCE depends on !XIP_KERNEL, no tested with xip
v1:
https://lore.kernel.org/linux-arm-kernel/20210825092116.1...
Kefeng Wang (3):
ARM: mm: Provide set_memory_valid()
ARM: mm: Provide is_write_fault()
ARM: Support KFENCE for ARM
arch/arm/Kconfig | 1 +
arch/arm/include/asm/kfence.h | 53 +++++++++++++++++++++++++++++++
arch/arm/include/asm/set_memory.h | 1 +
arch/arm/mm/fault.c | 16 ++++++++--
arch/arm/mm/pageattr.c | 42 ++++++++++++++++++------
5 files changed, 100 insertions(+), 13 deletions(-)
create mode 100644 arch/arm/include/asm/kfence.h
--
2.26.2
