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

Since commit 805b2e1 ("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 <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]> Acked-by: Will Deacon <[email protected]> Tested-by: Nathan Chancellor <[email protected]> Reviewed-by: Nathan Chancellor <[email protected]>
xlab-uiuc · Apr 24, 2021 · 987fdfe · 987fdfe
1 parent 2e98815
commit 987fdfe
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diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
@@ -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

diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
@@ -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