diff options
| author | Peilin Ye <yepeilin@google.com> | 2025-03-04 01:06:19 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-03-15 11:48:29 -0700 |
| commit | ab327cc841cb230338bcc59f81fe42a2694f3008 (patch) | |
| tree | a9ebea6881f92a1cc57ca4557f1268352aaf52a4 | |
| parent | 880442305a3908589bf4d6fc1d79edb577ee497c (diff) | |
arm64: insn: Add BIT(23) to {load,store}_ex's mask
We are planning to add load-acquire (LDAR{,B,H}) and store-release
(STLR{,B,H}) instructions to insn.{c,h}; add BIT(23) to mask of load_ex
and store_ex to prevent aarch64_insn_is_{load,store}_ex() from returning
false-positives for load-acquire and store-release instructions.
Reference: Arm Architecture Reference Manual (ARM DDI 0487K.a,
ID032224),
* C6.2.228 LDXR
* C6.2.165 LDAXR
* C6.2.161 LDAR
* C6.2.393 STXR
* C6.2.360 STLXR
* C6.2.353 STLR
Acked-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Peilin Ye <yepeilin@google.com>
Link: https://lore.kernel.org/r/5a4d2a52b2cc022bf86d0b572789f0b3bc3d5162.1741049567.git.yepeilin@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | arch/arm64/include/asm/insn.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h index e390c432f546..2d8316b3abaf 100644 --- a/arch/arm64/include/asm/insn.h +++ b/arch/arm64/include/asm/insn.h @@ -351,8 +351,8 @@ __AARCH64_INSN_FUNCS(ldr_imm, 0x3FC00000, 0x39400000) __AARCH64_INSN_FUNCS(ldr_lit, 0xBF000000, 0x18000000) __AARCH64_INSN_FUNCS(ldrsw_lit, 0xFF000000, 0x98000000) __AARCH64_INSN_FUNCS(exclusive, 0x3F800000, 0x08000000) -__AARCH64_INSN_FUNCS(load_ex, 0x3F400000, 0x08400000) -__AARCH64_INSN_FUNCS(store_ex, 0x3F400000, 0x08000000) +__AARCH64_INSN_FUNCS(load_ex, 0x3FC00000, 0x08400000) +__AARCH64_INSN_FUNCS(store_ex, 0x3FC00000, 0x08000000) __AARCH64_INSN_FUNCS(mops, 0x3B200C00, 0x19000400) __AARCH64_INSN_FUNCS(stp, 0x7FC00000, 0x29000000) __AARCH64_INSN_FUNCS(ldp, 0x7FC00000, 0x29400000) |