From: haoran.jiang@linux.dev
To: loongarch@lists.linux.dev
Cc: linux-kernel@vger.kernel.org, chenhuacai@kernel.org,
kernel@xen0n.name, yangtiezhu@loongson.cn,
Haoran Jiang <jianghaoran@kylinos.cn>
Subject: [PATCH 0/2] Add support to dump the kernel page tables
Date: Tue, 7 Jul 2026 14:45:54 +0800 [thread overview]
Message-ID: <20260707064556.371881-1-haoran.jiang@linux.dev> (raw)
From: Haoran Jiang <jianghaoran@kylinos.cn>
Enforce the W^X principle on page tables,
and also support the kernel page dump feature.
The following tests were performed:
kdb:
echo kgdbts=V1 > /sys/module/kgdbts/parameters/kgdbts
ebpf:
./test_progs -t struct_ops -d struct_ops_multi_pages
./test_progs -t fexit_stress
./test_progs -t module_fentry_shadow
./test_progs -t fentry_test/fentry
./test_progs -t fexit_test/fexit
./test_progs -t modify_return
./test_progs -t fexit_sleep
./test_progs -t test_overhead
./test_progs -t trampoline_count
./test_progs -t kprobe
./test_progs -t uprobe
livepatch:
insmod samples/livepatch/livepatch_sample.ko
kprobe:
insmod samples/kprobes/kprobe_example.ko
insmod samples/kprobes/kretprobe_example.ko
unxibench:
before this patch:
running 1 parallel copy of tests: 1492
running 128 parallel copies of tests: 8765
after this patch:
running 1 parallel copy of tests: 1440
running 128 parallel copies of tests: 8749
Haoran Jiang (2):
LoongArch: Enforce W^X for page-mapped virtual memory region
LoongArch: Add support to dump the kernel page tables
arch/loongarch/Kconfig | 2 +
arch/loongarch/include/asm/pgtable-bits.h | 12 +-
arch/loongarch/kernel/ftrace_dyn.c | 16 +
arch/loongarch/kernel/inst.c | 25 +-
arch/loongarch/kernel/jump_label.c | 3 +
arch/loongarch/kernel/kgdb.c | 50 +++
arch/loongarch/kernel/kprobes.c | 4 +-
arch/loongarch/mm/Makefile | 1 +
arch/loongarch/mm/ptdump.c | 474 ++++++++++++++++++++++
9 files changed, 575 insertions(+), 12 deletions(-)
create mode 100644 arch/loongarch/mm/ptdump.c
--
2.43.0
next reply other threads:[~2026-07-07 6:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-07 6:45 haoran.jiang [this message]
2026-07-07 6:45 ` [PATCH 1/2] LoongArch: Enforce W^X for page-mapped virtual memory region haoran.jiang
2026-07-07 6:45 ` [PATCH 2/2] LoongArch: Add support to dump the kernel page tables haoran.jiang
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