diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-05-19 05:49:19 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-26 22:22:22 +1000 |
| commit | a0591b60eef965f7f5255ad4696bbba9af4b43d0 (patch) | |
| tree | 22cfa6ca4e51f9fab66d544f6e6d9df2fbe9219b /arch/powerpc/kernel/vmlinux.lds.S | |
| parent | 0c8c2c9c201b44eed6c10d7c5c8d25fe5aab87ce (diff) | |
powerpc/mm: Don't be too strict with _etext alignment on PPC32
Similar to PPC64, accept to map RO data as ROX as a trade off between
between security and memory usage.
Having RO data executable is not a high risk as RO data can't be
modified to forge an exploit.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/8c4a0d89d944eed984dd941e509614031a5ace2b.1589866984.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/powerpc/kernel/vmlinux.lds.S | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 31a0f201fb6f..54f23205c2b9 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -15,7 +15,6 @@ #include <asm/thread_info.h> #define STRICT_ALIGN_SIZE (1 << CONFIG_DATA_SHIFT) -#define ETEXT_ALIGN_SIZE (1 << CONFIG_ETEXT_SHIFT) ENTRY(_stext) @@ -116,7 +115,7 @@ SECTIONS } :text - . = ALIGN(ETEXT_ALIGN_SIZE); + . = ALIGN(PAGE_SIZE); _etext = .; PROVIDE32 (etext = .); |