diff options
| author | Nathan Chancellor <nathan@kernel.org> | 2021-04-29 16:26:12 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2021-06-14 09:12:41 -0700 |
| commit | 583bfd484bcc85e9371e7205fa9e827c18ae34fb (patch) | |
| tree | 04777411b389677aafcd12055dd38a5cb0c5cd77 | |
| parent | 590e8a082a5772071d7bcfea2b8e5a2453cecad2 (diff) | |
x86, lto: Enable Clang LTO for 32-bit as well
Commit b33fff07e3e3 ("x86, build: allow LTO to be selected") enabled
support for LTO for x86_64 but 32-bit works fine as well.
I tested the following config combinations:
* i386_defconfig + CONFIG_LTO_CLANG_FULL=y
* i386_defconfig + CONFIG_LTO_CLANG_THIN=y
* ARCH=i386 allmodconfig + CONFIG_LTO_CLANG_THIN=y
with LLVM 11.1.0, 12.0.0, and 13.0.0 from git without any build
failures. The defconfigs boot in QEMU with no new warnings.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210429232611.3966964-1-nathan@kernel.org
| -rw-r--r-- | arch/x86/Kconfig | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0045e1b44190..12fa0d7bfa64 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -103,8 +103,8 @@ config X86 select ARCH_SUPPORTS_DEBUG_PAGEALLOC select ARCH_SUPPORTS_NUMA_BALANCING if X86_64 select ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP if NR_CPUS <= 4096 - select ARCH_SUPPORTS_LTO_CLANG if X86_64 - select ARCH_SUPPORTS_LTO_CLANG_THIN if X86_64 + select ARCH_SUPPORTS_LTO_CLANG + select ARCH_SUPPORTS_LTO_CLANG_THIN select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS |