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| author | Masahiro Yamada <masahiroy@kernel.org> | 2022-03-14 12:48:41 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-03-15 10:32:48 +0100 |
| commit | 83a44a4f47ad20997aebb311fc678a13cde391d7 (patch) | |
| tree | 9bd556b1b2f2ea0dcdb481266767fe02f10dbc12 /arch/x86/Kconfig | |
| parent | ed53a0d971926e484d86cce617ec02a7ee85c3fe (diff) | |
| download | lwn-83a44a4f47ad20997aebb311fc678a13cde391d7.tar.gz lwn-83a44a4f47ad20997aebb311fc678a13cde391d7.zip | |
x86: Remove toolchain check for X32 ABI capability
Commit 0bf6276392e9 ("x32: Warn and disable rather than error if
binutils too old") added a small test in arch/x86/Makefile because
binutils 2.22 or newer is needed to properly support elf32-x86-64. This
check is no longer necessary, as the minimum supported version of
binutils is 2.23, which is enforced at configuration time with
scripts/min-tool-version.sh.
Remove this check and replace all uses of CONFIG_X86_X32 with
CONFIG_X86_X32_ABI, as two symbols are no longer necessary.
[nathan: Rebase, fix up a few places where CONFIG_X86_X32 was still
used, and simplify commit message to satisfy -tip requirements]
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220314194842.3452-2-nathan@kernel.org
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 870e0d10452d..b903bfcd713c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2861,7 +2861,7 @@ config IA32_AOUT help Support old a.out binaries in the 32bit emulation. -config X86_X32 +config X86_X32_ABI bool "x32 ABI for 64-bit mode" depends on X86_64 help @@ -2870,10 +2870,6 @@ config X86_X32 full 64-bit register file and wide data path while leaving pointers at 32 bits for smaller memory footprint. - You will need a recent binutils (2.22 or later) with - elf32_x86_64 support enabled to compile a kernel with this - option set. - config COMPAT_32 def_bool y depends on IA32_EMULATION || X86_32 @@ -2882,7 +2878,7 @@ config COMPAT_32 config COMPAT def_bool y - depends on IA32_EMULATION || X86_X32 + depends on IA32_EMULATION || X86_X32_ABI if COMPAT config COMPAT_FOR_U64_ALIGNMENT |