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arm64: move --fix-cortex-a53-843419 linker test to Kconfig

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Since commit 805b2e1d42 ("kbuild: include Makefile.compiler only when
compiler is needed"), "make ARCH=arm64 (modules_)install" shows a false
positive warning.

Move the ld-option test to Kconfig, so that the result can be stored in
the .config file, avoiding multiple-time evaluations in the build and
installation time.

Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
This commit is contained in:
Masahiro Yamada 2021-03-24 16:11:28 +09:00
parent 2e98815794
commit 987fdfec24
2 changed files with 4 additions and 1 deletions
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3
arch/arm64/Kconfig
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@ -521,6 +521,9 @@ config ARM64_ERRATUM_843419
If unsure, say Y.
config ARM64_LD_HAS_FIX_ERRATUM_843419
def_bool $(ld-option,--fix-cortex-a53-843419)
config ARM64_ERRATUM_1024718
bool "Cortex-A55: 1024718: Update of DBM/AP bits without break before make might result in incorrect update"
default y

2
arch/arm64/Makefile
View File

@ -21,7 +21,7 @@ LDFLAGS_vmlinux += -shared -Bsymbolic -z notext \
endif
ifeq ($(CONFIG_ARM64_ERRATUM_843419),y)
ifeq ($(call ld-option, --fix-cortex-a53-843419),)
ifneq ($(CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843419),y)
$(warning ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum)
else
LDFLAGS_vmlinux += --fix-cortex-a53-843419