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| author | Jinyang He <hejinyang@loongson.cn> | 2024-03-11 17:23:47 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-03-11 17:23:47 +0300 |
| commit | 199cc14cb4f1cb8668be45f67af41755ed5f0175 (patch) | |
| tree | cf3436e1832645f7e5537e929b2453be3061291b /arch/loongarch/Kconfig | |
| parent | cb8a2ef0848ca80d67d6d56e2df757cfdf6b3355 (diff) | |
| download | linux-199cc14cb4f1cb8668be45f67af41755ed5f0175.tar.xz | |
LoongArch: Add kernel livepatching support
The arch-specified function ftrace_regs_set_instruction_pointer() has
been implemented in arch/loongarch/include/asm/ftrace.h, so here only
implement arch_stack_walk_reliable() function.
Here are the test logs:
[root@linux fedora]# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-6.8.0-rc2 root=/dev/sda3
[root@linux fedora]# modprobe livepatch-sample
[root@linux fedora]# cat /proc/cmdline
this has been live patched
[root@linux fedora]# echo 0 > /sys/kernel/livepatch/livepatch_sample/enabled
[root@linux fedora]# rmmod livepatch_sample
[root@linux fedora]# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-6.8.0-rc2 root=/dev/sda3
[root@linux fedora]# dmesg -t | tail -5
livepatch: enabling patch 'livepatch_sample'
livepatch: 'livepatch_sample': starting patching transition
livepatch: 'livepatch_sample': patching complete
livepatch: 'livepatch_sample': starting unpatching transition
livepatch: 'livepatch_sample': unpatching complete
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 8d6725115ac6..99a0a15ce5f7 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -134,6 +134,7 @@ config LOONGARCH select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES select HAVE_KVM + select HAVE_LIVEPATCH select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI select HAVE_OBJTOOL if AS_HAS_EXPLICIT_RELOCS @@ -143,6 +144,7 @@ config LOONGARCH select HAVE_PERF_USER_STACK_DUMP select HAVE_PREEMPT_DYNAMIC_KEY select HAVE_REGS_AND_STACK_ACCESS_API + select HAVE_RELIABLE_STACKTRACE if UNWINDER_ORC select HAVE_RETHOOK select HAVE_RSEQ select HAVE_RUST @@ -636,6 +638,8 @@ config RANDOMIZE_BASE_MAX_OFFSET This is limited by the size of the lower address memory, 256MB. +source "kernel/livepatch/Kconfig" + endmenu config ARCH_SELECT_MEMORY_MODEL |