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MIPS: remove CONFIG_MIPS_LD_CAN_LINK_VDSO

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Given commit e441273947 ("Documentation: raise minimum supported
version of binutils to 2.25"), CONFIG_MIPS_LD_CAN_LINK_VDSO is always
'y'.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Masahiro Yamada 2023-01-20 15:33:51 +09:00 committed by Thomas Bogendoerfer
parent b74cc639f7
commit f048158c42
2 changed files with 1 additions and 16 deletions
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14
arch/mips/vdso/Kconfig
View file

@ -1,18 +1,6 @@
# For the pre-R6 code in arch/mips/vdso/vdso.h for locating
# the base address of VDSO, the linker will emit a R_MIPS_PC32
# relocation in binutils > 2.25 but it will fail with older versions
# because that relocation is not supported for that symbol. As a result
# of which we are forced to disable the VDSO symbols when building
# with < 2.25 binutils on pre-R6 kernels. For more references on why we
# can't use other methods to get the base address of VDSO please refer to
# the comments on that file.
#
# GCC (at least up to version 9.2) appears to emit function calls that make use
# of the GOT when targeting microMIPS, which we can't use in the VDSO due to
# the lack of relocations. As such, we disable the VDSO for microMIPS builds.
config MIPS_LD_CAN_LINK_VDSO
def_bool LD_VERSION >= 22500 || LD_IS_LLD
config MIPS_DISABLE_VDSO
def_bool CPU_MICROMIPS || (!CPU_MIPSR6 && !MIPS_LD_CAN_LINK_VDSO)
def_bool CPU_MICROMIPS

3
arch/mips/vdso/Makefile
View file

@ -52,9 +52,6 @@ endif
CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE)
ifdef CONFIG_MIPS_DISABLE_VDSO
ifndef CONFIG_MIPS_LD_CAN_LINK_VDSO
$(warning MIPS VDSO requires binutils >= 2.25)
endif
obj-vdso-y := $(filter-out vgettimeofday.o, $(obj-vdso-y))
endif