From: Ard Biesheuvel <[email protected]> Before moving the empty_zero_page into the __ro_after_init section, make sure it has the memory-tagged type. This is needed to ensure that cpu_enable_mte() will be able to initialize the tags correctly.
Signed-off-by: Ard Biesheuvel <[email protected]> --- arch/arm64/mm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index dd85e093ffdb..f084993024ab 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1049,7 +1049,7 @@ void __init mark_linear_text_alias_ro(void) */ update_mapping_prot(__pa_symbol(_text), (unsigned long)lm_alias(_text), (unsigned long)__init_begin - (unsigned long)_text, - PAGE_KERNEL_RO); + pgprot_tagged(PAGE_KERNEL_RO)); } #ifdef CONFIG_KFENCE -- 2.54.0.rc2.544.gc7ae2d5bb8-goog
