2 May
2025
2 May
'25
6:14 p.m.
On Fri, May 02, 2025 at 06:41:33PM +0200, Ard Biesheuvel wrote:
Making arm64_use_ng_mappings __ro_after_init seems like a useful change by itself, so I am not objecting to that. But we don't solve it more fundamentally, please at least add a big fat comment why it is important that the variable remains there.
Maybe something like the section reference checker we use for __init - verify that the early C code does not refer anything in the BSS section.
Maybe but it would be better to be checked at compile time (I don't know it's possible) otherwise, early C code writer should check mandatroy by calling is_kernel_bss_data() (not exist) for data it refers.
-- Catalin
-- Sincerely, Yeoreum Yun