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| 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/Kconfig | |
| parent | 8fdddb2eae731dd6beb89f9b812e5915d1beb744 (diff) | |
| download | lwn-59c4da8640ccf4721d54d36835706f3eefb521a4.tar.gz lwn-59c4da8640ccf4721d54d36835706f3eefb521a4.zip | |
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/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index dfc9c3ea9f7d..b2764a0a0c8c 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -29,6 +29,7 @@ config RISCV select GENERIC_SMP_IDLE_THREAD select GENERIC_ATOMIC64 if !64BIT select GENERIC_IOREMAP + select GENERIC_PTDUMP if MMU select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_SECCOMP_FILTER select HAVE_ASM_MODVERSIONS |