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Nathan Chancellor 583bfd484b x86, lto: Enable Clang LTO for 32-bit as well
Commit b33fff07e3 ("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
2021-06-14 09:12:41 -07:00
arch x86, lto: Enable Clang LTO for 32-bit as well 2021-06-14 09:12:41 -07:00
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Documentation USB fixes for 5.13-rc2 2021-05-16 09:55:05 -07:00
drivers Driver core fixes for 5.13-rc2 2021-05-16 10:13:14 -07:00
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include CFI: Move function_nocfi() into compiler.h 2021-06-14 09:12:09 -07:00
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kernel Two fixes for timers: 2021-05-16 09:42:13 -07:00
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tools - Enable -Wundef for the compressed kernel build stage 2021-05-16 09:31:06 -07:00
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MAINTAINERS MAINTAINERS: Add Clang CFI section 2021-06-14 09:12:09 -07:00
Makefile Linux 5.13-rc2 2021-05-16 15:27:44 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.