diff options
| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2023-02-25 15:52:57 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-02-25 22:12:17 +0800 |
| commit | 6d4cc40fb5f58147defc6c0e9d86e6232fe31616 (patch) | |
| tree | 71f244b9bce629eb133a0cb8d90c08f2cdd9e98f /arch/loongarch/mm | |
| parent | 9b3441a6b0e1ed4796e7f5a8586c4d6023c4e3ab (diff) | |
| download | linux-stable-6d4cc40fb5f58147defc6c0e9d86e6232fe31616.tar.gz linux-stable-6d4cc40fb5f58147defc6c0e9d86e6232fe31616.tar.bz2 linux-stable-6d4cc40fb5f58147defc6c0e9d86e6232fe31616.zip | |
LoongArch: Add kprobes support
Kprobes allows you to trap at almost any kernel address and execute a
callback function, this commit adds kprobes support for LoongArch.
Tested-by: Jeff Xie <xiehuan09@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/mm')
| -rw-r--r-- | arch/loongarch/mm/fault.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/loongarch/mm/fault.c b/arch/loongarch/mm/fault.c index 1ccd53655cab..449087bd589d 100644 --- a/arch/loongarch/mm/fault.c +++ b/arch/loongarch/mm/fault.c @@ -135,6 +135,9 @@ static void __kprobes __do_page_fault(struct pt_regs *regs, struct vm_area_struct *vma = NULL; vm_fault_t fault; + if (kprobe_page_fault(regs, current->thread.trap_nr)) + return; + /* * We fault-in kernel-space virtual memory on-demand. The * 'reference' page table is init_mm.pgd. |