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| author |   Nicholas Piggin <npiggin@gmail.com> | 2022-09-16 14:07:49 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-09-26 20:58:16 +1000 |
| commit | 7082f8e7d2276575a8806370007cbb4a7b9abdce (patch) | |
| tree | 8b534ee44f283a58de7353121e364a7f9e524747 /arch/powerpc/mm/book3s64/hash_pgtable.c | |
| parent | powerpc/vmlinux.lds: Add an explicit symbol for the SRWX boundary (diff) | |
| download | wireguard-linux-7082f8e7d2276575a8806370007cbb4a7b9abdce.tar.xz wireguard-linux-7082f8e7d2276575a8806370007cbb4a7b9abdce.zip | |
powerpc: move __end_rodata to cover arch read-only sections
powerpc has a number of read-only sections and tables that are put after
RO_DATA(). Move the __end_rodata symbol to cover these as well.
Setting memory to read-only at boot is done using __init_begin, change
that to use __end_rodata.
This makes is_kernel_rodata() exactly cover the read-only region, as
well as other things using __end_rodata (e.g., kernel/dma/debug.c).
Boot dmesg also prints the rodata size more accurately.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220916040755.2398112-2-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/mm/book3s64/hash_pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_pgtable.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/book3s64/hash_pgtable.c b/arch/powerpc/mm/book3s64/hash_pgtable.c index ae008b9df0e6..28332001bd87 100644 --- a/arch/powerpc/mm/book3s64/hash_pgtable.c +++ b/arch/powerpc/mm/book3s64/hash_pgtable.c @@ -541,7 +541,7 @@ void hash__mark_rodata_ro(void) unsigned long start, end, pp; start = (unsigned long)_stext; - end = (unsigned long)__init_begin; + end = (unsigned long)__end_rodata; pp = htab_convert_pte_flags(pgprot_val(PAGE_KERNEL_ROX), HPTE_USE_KERNEL_KEY); |