diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2022-09-16 14:41:24 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-09-26 20:58:16 +1000 |
| commit | b150a4d12b919baf956b807aa305cf78df03d0fe (patch) | |
| tree | ba2cae6103c8ce646db2b7dc93dd48912c21a77b /arch/powerpc/mm/book3s32/mmu.c | |
| parent | 331771e836e6a32c8632d8cf5e2cdd94471258ad (diff) | |
powerpc/vmlinux.lds: Add an explicit symbol for the SRWX boundary
Currently __init_begin is used as the boundary for strict RWX between
executable/read-only text and data, and non-executable (after boot) code
and data.
But that's a little subtle, so add an explicit symbol to document that
the SRWX boundary lies there, and add a comment making it clear that
__init_begin must also begin there.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220916131422.318752-2-mpe@ellerman.id.au
Diffstat (limited to 'arch/powerpc/mm/book3s32/mmu.c')
| -rw-r--r-- | arch/powerpc/mm/book3s32/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c index a96b73006dfb..250d174459d4 100644 --- a/arch/powerpc/mm/book3s32/mmu.c +++ b/arch/powerpc/mm/book3s32/mmu.c @@ -158,7 +158,7 @@ static unsigned long __init __mmu_mapin_ram(unsigned long base, unsigned long to unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top) { unsigned long done; - unsigned long border = (unsigned long)__init_begin - PAGE_OFFSET; + unsigned long border = (unsigned long)__srwx_boundary - PAGE_OFFSET; unsigned long size; size = roundup_pow_of_two((unsigned long)_einittext - PAGE_OFFSET); |