diff options
| author | Zong Li <zong.li@sifive.com> | 2020-03-12 10:58:35 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-03-26 09:29:49 -0700 |
| commit | 59c4da8640ccf4721d54d36835706f3eefb521a4 (patch) | |
| tree | 598f0449ad9a5643de09202de7b9268f72e33f55 /arch/riscv/include/asm/ptdump.h | |
| parent | 8fdddb2eae731dd6beb89f9b812e5915d1beb744 (diff) | |
riscv: Add support to dump the kernel page tables
In a similar manner to arm64, x86, powerpc, etc., it can traverse all
page tables, and dump the page table layout with the memory types and
permissions.
Add a debugfs file at /sys/kernel/debug/kernel_page_tables to export
the page table layout to userspace.
Signed-off-by: Zong Li <zong.li@sifive.com>
Tested-by: Alexandre Ghiti <alex@ghiti.fr>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/include/asm/ptdump.h')
| -rw-r--r-- | arch/riscv/include/asm/ptdump.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/ptdump.h b/arch/riscv/include/asm/ptdump.h new file mode 100644 index 000000000000..e29af7191909 --- /dev/null +++ b/arch/riscv/include/asm/ptdump.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 SiFive + */ + +#ifndef _ASM_RISCV_PTDUMP_H +#define _ASM_RISCV_PTDUMP_H + +void ptdump_check_wx(void); + +#endif /* _ASM_RISCV_PTDUMP_H */ |