diff options
| author | Nick Desaulniers <ndesaulniers@google.com> | 2021-10-19 15:36:46 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-29 12:25:53 +0100 |
| commit | 8c0059a25cb1da1454354350ff1db5cb8e0ea326 (patch) | |
| tree | cad13d30f7fb7e71eded42a0a98dbd6fd91430bc /arch/arm64/Kconfig | |
| parent | b16b124a42e0c1daeafbea01094558f6cacbe059 (diff) | |
arm64: vdso32: require CROSS_COMPILE_COMPAT for gcc+bfd
commit 3e6f8d1fa18457d54b20917bd9174d27daf09ab9 upstream.
Similar to
commit 231ad7f409f1 ("Makefile: infer --target from ARCH for CC=clang")
There really is no point in setting --target based on
$CROSS_COMPILE_COMPAT for clang when the integrated assembler is being
used, since
commit ef94340583ee ("arm64: vdso32: drop -no-integrated-as flag").
Allows COMPAT_VDSO to be selected without setting $CROSS_COMPILE_COMPAT
when using clang and lld together.
Before:
$ ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi- make -j72 LLVM=1 defconfig
$ grep CONFIG_COMPAT_VDSO .config
CONFIG_COMPAT_VDSO=y
$ ARCH=arm64 make -j72 LLVM=1 defconfig
$ grep CONFIG_COMPAT_VDSO .config
$
After:
$ ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi- make -j72 LLVM=1 defconfig
$ grep CONFIG_COMPAT_VDSO .config
CONFIG_COMPAT_VDSO=y
$ ARCH=arm64 make -j72 LLVM=1 defconfig
$ grep CONFIG_COMPAT_VDSO .config
CONFIG_COMPAT_VDSO=y
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20211019223646.1146945-5-ndesaulniers@google.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 5e5cf3af6351..3da71fe56b92 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1265,7 +1265,8 @@ config KUSER_HELPERS config COMPAT_VDSO bool "Enable vDSO for 32-bit applications" - depends on !CPU_BIG_ENDIAN && "$(CROSS_COMPILE_COMPAT)" != "" + depends on !CPU_BIG_ENDIAN + depends on (CC_IS_CLANG && LD_IS_LLD) || "$(CROSS_COMPILE_COMPAT)" != "" select GENERIC_COMPAT_VDSO default y help |