Re: [PATCH] arm64/vmcore: Add pgtable_l5_enabled information in vmcoreinfo

Will Deacon
2024-08-27T12:25:05Z

On Mon, Aug 26, 2024 at 02:52:02PM +0800, Kuan-Ying Lee wrote:
> Since arm64 supports 5-level page tables, we need to add this
> information to vmcoreinfo to make debug tools know if 5-level
> page table is enabled or not.
>
> Missing this information will break the debug tool like crash [1].
>
> [1] https://github.com/crash-utility/crash
>
> Signed-off-by: Kuan-Ying Lee <kuan-ying.lee@canonical.com>
> ---
> Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 ++++++
> arch/arm64/kernel/vmcore_info.c | 3 +++
> 2 files changed, 9 insertions(+)

In which case, wouldn't you also want to know about pgtable_l4_enabled()?

Will