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Message-ID: <20210926072048.190336-1-wangkefeng.wang@huawei.com>
Date: Sun, 26 Sep 2021 15:20:39 +0800
From: Kefeng Wang <wangkefeng.wang@...wei.com>
To: <arnd@...db.de>, <linux-arch@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
<rostedt@...dmis.org>, <mingo@...hat.com>, <davem@...emloft.net>,
<ast@...nel.org>, <ryabinin.a.a@...il.com>,
<akpm@...ux-foundation.org>
CC: <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
<paulus@...ba.org>, <bpf@...r.kernel.org>,
Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH v3 0/9] sections: Unify kernel sections range check and use
There are three head files(kallsyms.h, kernel.h and sections.h) which
include the kernel sections range check, let's make some cleanup and
unify them.
1. cleanup arch specific text/data check and fix address boundary check
in kallsyms.h
2. make all the basic/core kernel range check function into sections.h
3. update all the callers, and use the helper in sections.h to simplify
the code
After this series, we have 5 APIs about kernel sections range check in
sections.h
* is_kernel_rodata() --- already in sections.h
* is_kernel_core_data() --- come from core_kernel_data() in kernel.h
* is_kernel_inittext() --- come from kernel.h and kallsyms.h
* __is_kernel_text() --- add new internal helper
* __is_kernel() --- add new internal helper
Note: For the last two helpers, people should not use directly, consider to
use corresponding function in kallsyms.h.
v3:
- Add Steven's RB to patch2
- Introduce two internal helper, then use is_kernel_text() in core_kernel_text()
and is_kernel() in kernel_or_module_addr() suggested by Steven
v2:
https://lore.kernel.org/linux-arch/20210728081320.20394-1-wangkefeng.wang@huawei.com/
- add ACK/RW to patch2, and drop inappropriate fix tag
- keep 'core' to check kernel data, suggestted by Steven Rostedt
<rostedt@...dmis.org>, rename is_kernel_data() to is_kernel_core_data()
- drop patch8 which is merged
- drop patch9 which is resend independently
v1:
https://lore.kernel.org/linux-arch/20210626073439.150586-1-wangkefeng.wang@huawei.com
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: linux-arch@...r.kernel.org
Cc: bpf@...r.kernel.org
Kefeng Wang (9):
kallsyms: Remove arch specific text and data check
kallsyms: Fix address-checks for kernel related range
sections: Move and rename core_kernel_data() to is_kernel_core_data()
sections: Move is_kernel_inittext() into sections.h
x86: mm: Rename __is_kernel_text() to is_x86_32_kernel_text()
sections: Provide internal __is_kernel() and __is_kernel_text() helper
mm: kasan: Use is_kernel() helper
extable: Use is_kernel_text() helper
powerpc/mm: Use is_kernel_text() and is_kernel_inittext() helper
arch/powerpc/mm/pgtable_32.c | 7 +---
arch/x86/kernel/unwind_orc.c | 2 +-
arch/x86/mm/init_32.c | 14 +++----
include/asm-generic/sections.h | 75 ++++++++++++++++++++++++++--------
include/linux/kallsyms.h | 13 +-----
include/linux/kernel.h | 2 -
kernel/extable.c | 33 ++-------------
kernel/locking/lockdep.c | 3 --
kernel/trace/ftrace.c | 2 +-
mm/kasan/report.c | 2 +-
net/sysctl_net.c | 2 +-
11 files changed, 75 insertions(+), 80 deletions(-)
--
2.26.2
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