Thanks Naresh for the report. On Thu, Dec 16, 2021 at 09:30:44AM +0530, Naresh Kamboju wrote: > [ Please ignore this email if it is already reported ] > > While building Linux next 20211215 arm64 defconfig with gcc-8 > following warnings / errors noticed. > and gcc-9, gcc-10 and gcc-11 builds pass. > > make --silent --keep-going --jobs=8 > O=/home/tuxbuild/.cache/tuxmake/builds/current \ > ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \ > CROSS_COMPILE_COMPAT=arm-linux-gnueabihf- \ > 'CC=sccache aarch64-linux-gnu-gcc' \ > 'HOSTCC=sccache gcc' > > /builds/linux/arch/arm64/kernel/efi-rt-wrapper.S: Assembler messages: > /builds/linux/arch/arm64/kernel/efi-rt-wrapper.S:8: Error: unknown > mnemonic `bti' -- `bti c' > make[3]: *** [/builds/linux/scripts/Makefile.build:411: > arch/arm64/kernel/efi-rt-wrapper.o] Error 1 We defined the bti macro in assembler.h but that's not included by linkage.h and not all asm files seem to include the former. At a quick grep we need the diff below, not sure it's the best solution: diff --git a/arch/arm64/crypto/nh-neon-core.S b/arch/arm64/crypto/nh-neon-core.S index 51c0a534ef87..bf6f7ee46d63 100644 --- a/arch/arm64/crypto/nh-neon-core.S +++ b/arch/arm64/crypto/nh-neon-core.S @@ -8,6 +8,7 @@ */ #include <linux/linkage.h> +#include <asm/assembler.h> KEY .req x0 MESSAGE .req x1 diff --git a/arch/arm64/kernel/efi-rt-wrapper.S b/arch/arm64/kernel/efi-rt-wrapper.S index 75691a2641c1..9fde85521146 100644 --- a/arch/arm64/kernel/efi-rt-wrapper.S +++ b/arch/arm64/kernel/efi-rt-wrapper.S @@ -4,6 +4,7 @@ */ #include <linux/linkage.h> +#include <asm/assembler.h> SYM_FUNC_START(__efi_rt_asm_wrapper) stp x29, x30, [sp, #-32]! diff --git a/arch/arm64/kernel/reloc_test_syms.S b/arch/arm64/kernel/reloc_test_syms.S index c50f45fa29fa..57bf78446a29 100644 --- a/arch/arm64/kernel/reloc_test_syms.S +++ b/arch/arm64/kernel/reloc_test_syms.S @@ -4,6 +4,7 @@ */ #include <linux/linkage.h> +#include <asm/assembler.h> SYM_FUNC_START(absolute_data64) ldr x0, 0f -- Catalin
