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From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Russell King <linux@armlinux.org.uk>,
	Alexander Potapenko <glider@google.com>,
	Marco Elver <elver@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <kasan-dev@googlegroups.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH 0/4] ARM: Support KFENCE feature
Date: Wed, 25 Aug 2021 17:21:12 +0800	[thread overview]
Message-ID: <20210825092116.149975-1-wangkefeng.wang@huawei.com> (raw)

The patch 1~3 is to support KFENCE feature on ARM. 

NOTE: 
The context of patch2/3 changes in arch/arm/mm/fault.c is based on link[1],
which make some refactor and cleanup about page fault.

kfence_test is not useful when kfence is not enabled, skip kfence test
when kfence not enabled in patch4.

I tested the kfence_test on ARM QEMU with or without ARM_LPAE and all passed.

[1] https://lore.kernel.org/linux-arm-kernel/20210610123556.171328-1-wangkefeng.wang@huawei.com/

Kefeng Wang (4):
  ARM: mm: Provide set_memory_valid()
  ARM: mm: Provide is_write_fault()
  ARM: Support KFENCE for ARM
  mm: kfence: Only load kfence_test when kfence is enabled

 arch/arm/Kconfig                  |  1 +
 arch/arm/include/asm/kfence.h     | 52 +++++++++++++++++++++++++++++++
 arch/arm/include/asm/set_memory.h |  5 +++
 arch/arm/mm/fault.c               | 16 ++++++++--
 arch/arm/mm/pageattr.c            | 41 ++++++++++++++++++------
 include/linux/kfence.h            |  2 ++
 mm/kfence/core.c                  |  8 +++++
 mm/kfence/kfence_test.c           |  2 ++
 8 files changed, 114 insertions(+), 13 deletions(-)
 create mode 100644 arch/arm/include/asm/kfence.h

-- 
2.26.2


             reply	other threads:[~2021-08-25  9:17 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-25  9:21 Kefeng Wang [this message]
2021-08-25  9:21 ` [PATCH 1/4] ARM: mm: Provide set_memory_valid() Kefeng Wang
2021-08-25  9:21 ` [PATCH 2/4] ARM: mm: Provide is_write_fault() Kefeng Wang
2021-08-25  9:21 ` [PATCH 3/4] ARM: Support KFENCE for ARM Kefeng Wang
2021-08-25 13:18   ` ownia
2021-08-25 14:31     ` Kefeng Wang
2021-08-25  9:21 ` [PATCH 4/4] mm: kfence: Only load kfence_test when kfence is enabled Kefeng Wang
2021-08-25  9:31   ` Alexander Potapenko
2021-08-25  9:54     ` Marco Elver
2021-08-25  9:55     ` Kefeng Wang
2021-08-25  9:59       ` Marco Elver
2021-08-25 10:14 ` [PATCH 0/4] ARM: Support KFENCE feature Marco Elver
2021-08-25 10:57   ` Marco Elver
2021-08-25 14:15     ` Kefeng Wang
2021-08-25 14:28     ` Kefeng Wang

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