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authorHelge Deller <deller@gmx.de>2023-11-21 01:10:20 +0300
committerHelge Deller <deller@gmx.de>2023-11-25 11:43:17 +0300
commit33f806da2df68606f77d7b892cd1298ba3d463e8 (patch)
treeda2c925ee4c048bc896283928399d3a242c97560 /arch/parisc
parenta80aeb86542a50aa8521729ea4cc731ee7174f03 (diff)
downloadlinux-33f806da2df68606f77d7b892cd1298ba3d463e8.tar.xz
parisc: Mark altinstructions read-only and 32-bit aligned
Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # v6.0+
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/include/asm/alternative.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/parisc/include/asm/alternative.h b/arch/parisc/include/asm/alternative.h
index 1ed45fd085d3..1eb488f25b83 100644
--- a/arch/parisc/include/asm/alternative.h
+++ b/arch/parisc/include/asm/alternative.h
@@ -34,7 +34,8 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
/* Alternative SMP implementation. */
#define ALTERNATIVE(cond, replacement) "!0:" \
- ".section .altinstructions, \"aw\" !" \
+ ".section .altinstructions, \"a\" !" \
+ ".align 4 !" \
".word (0b-4-.) !" \
".hword 1, " __stringify(cond) " !" \
".word " __stringify(replacement) " !" \
@@ -44,7 +45,8 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
/* to replace one single instructions by a new instruction */
#define ALTERNATIVE(from, to, cond, replacement)\
- .section .altinstructions, "aw" ! \
+ .section .altinstructions, "a" ! \
+ .align 4 ! \
.word (from - .) ! \
.hword (to - from)/4, cond ! \
.word replacement ! \
@@ -52,7 +54,8 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
/* to replace multiple instructions by new code */
#define ALTERNATIVE_CODE(from, num_instructions, cond, new_instr_ptr)\
- .section .altinstructions, "aw" ! \
+ .section .altinstructions, "a" ! \
+ .align 4 ! \
.word (from - .) ! \
.hword -num_instructions, cond ! \
.word (new_instr_ptr - .) ! \