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x86: Remove toolchain check for X32 ABI capability

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Commit 0bf6276392 ("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
This commit is contained in:
Masahiro Yamada
2022-03-14 12:48:41 -07:00
committed by Peter Zijlstra
parent ed53a0d971
commit 83a44a4f47
10 changed files with 28 additions and 48 deletions
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2
arch/x86/kernel/process_64.c
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@@ -681,7 +681,7 @@ void set_personality_64bit(void)
static void __set_personality_x32(void)
{
#ifdef CONFIG_X86_X32
#ifdef CONFIG_X86_X32_ABI
if (current->mm)
current->mm->context.flags = 0;