x86, cpu: disable LTO for cpu.c
authorSami Tolvanen <samitolvanen@google.com>
Wed, 16 Sep 2020 19:57:56 +0000 (12:57 -0700)
committerKees Cook <keescook@chromium.org>
Tue, 23 Feb 2021 20:46:58 +0000 (12:46 -0800)
commitd2dcd3e37475a66012f9702c4f9f0863ccdae716
tree2830346f66896f32a6fe5f87b46b50fb6e8c123b
parente242db40be271793b248bf0ad1b7d7bd6359dc76
x86, cpu: disable LTO for cpu.c

Clang incorrectly inlines functions with differing stack protector
attributes, which breaks __restore_processor_state() that relies on
stack protector being disabled. This change disables LTO for cpu.c
to work aroung the bug.

Link: https://bugs.llvm.org/show_bug.cgi?id=47479
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
arch/x86/power/Makefile