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authorIlie Halip <ilie.halip@gmail.com>2020-03-19 23:45:28 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-04-02 17:20:40 +0200
commitfd08eda55929b96917f55df6d6dfcc3450587a78 (patch)
tree1a1a073a59007dd10f72be203dac71099a83be7a /arch
parent8b1d5cd9c79c412f8bc845a6d64d12107c200480 (diff)
arm64: alternative: fix build with clang integrated assembler
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream. Building an arm64 defconfig with clang's integrated assembler, this error occurs: <instantiation>:2:2: error: unrecognized instruction mnemonic _ASM_EXTABLE 9999b, 9f ^ arch/arm64/mm/cache.S:50:1: note: while in macro instantiation user_alt 9f, "dc cvau, x4", "dc civac, x4", 0 ^ While GNU as seems fine with case-sensitive macro instantiations, clang doesn't, so use the actual macro name (_asm_extable) as in the rest of the file. Also checked that the generated assembly matches the GCC output. Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core") Link: https://github.com/ClangBuiltLinux/linux/issues/924 Signed-off-by: Ilie Halip <ilie.halip@gmail.com> Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/include/asm/alternative.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h
index 3626655175a2..b7205c254c0d 100644
--- a/arch/arm64/include/asm/alternative.h
+++ b/arch/arm64/include/asm/alternative.h
@@ -215,7 +215,7 @@ alternative_endif
.macro user_alt, label, oldinstr, newinstr, cond
9999: alternative_insn "\oldinstr", "\newinstr", \cond
- _ASM_EXTABLE 9999b, \label
+ _asm_extable 9999b, \label
.endm
/*