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arm64/boot: Move init_pgdir[] and init_idmap_pgdir[] into __pi_ namespace

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init_pgdir[] is only referenced from the startup code, but lives after
BSS in the linker map. Before tightening the rules about accessing BSS
from startup code, move init_pgdir[] into the __pi_ namespace, so it
does not need to be exported explicitly.

For symmetry, do the same with init_idmap_pgdir[], although it lives
before BSS.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Link: https://lore.kernel.org/r/20250508114328.2460610-6-ardb+git@google.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Ard Biesheuvel
2025-05-08 13:43:30 +02:00
committed by Will Deacon
parent 13c63ce358
commit 93d0d6f8a6
5 changed files with 8 additions and 13 deletions
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8
arch/arm64/kernel/vmlinux.lds.S
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@@ -249,9 +249,9 @@ SECTIONS
__inittext_end = .;
__initdata_begin = .;
init_idmap_pg_dir = .;
__pi_init_idmap_pg_dir = .;
. += INIT_IDMAP_DIR_SIZE;
init_idmap_pg_end = .;
__pi_init_idmap_pg_end = .;
.init.data : {
INIT_DATA
@@ -321,9 +321,9 @@ SECTIONS
BSS_SECTION(SBSS_ALIGN, 0, 0)
. = ALIGN(PAGE_SIZE);
init_pg_dir = .;
__pi_init_pg_dir = .;
. += INIT_DIR_SIZE;
init_pg_end = .;
__pi_init_pg_end = .;
/* end of zero-init region */
. += SZ_4K; /* stack for the early C runtime */