diff options
Diffstat (limited to 'arch/arm64/kernel/head.S')
| -rw-r--r-- | arch/arm64/kernel/head.S | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 7bf52ee0a805..4471f570a295 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -287,18 +287,20 @@ __create_page_tables: mov x28, lr /* - * Invalidate the idmap and swapper page tables to avoid potential - * dirty cache lines being evicted. + * Invalidate the init page tables to avoid potential dirty cache lines + * being evicted. Other page tables are allocated in rodata as part of + * the kernel image, and thus are clean to the PoC per the boot + * protocol. */ - adrp x0, idmap_pg_dir + adrp x0, init_pg_dir adrp x1, init_pg_end sub x1, x1, x0 bl __inval_dcache_area /* - * Clear the idmap and swapper page tables. + * Clear the init page tables. */ - adrp x0, idmap_pg_dir + adrp x0, init_pg_dir adrp x1, init_pg_end sub x1, x1, x0 1: stp xzr, xzr, [x0], #16 |