From: Sami Tolvanen Date: Thu, 6 Aug 2020 22:15:02 +0000 (-0700) Subject: x86, build: use objtool mcount X-Git-Tag: v5.12-rc1~55^2~6 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6dafca97803309c3cb5148d449bfa711e41ddef2;p=linux-platform-drivers-x86.git x86, build: use objtool mcount Select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION is selected to use objtool to generate __mcount_loc sections for dynamic ftrace with Clang and gcc <5 (later versions of gcc use -mrecord-mcount). Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 7b6dd10b162a..9cd9bd6562e3 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -167,6 +167,7 @@ config X86 select HAVE_CONTEXT_TRACKING if X86_64 select HAVE_CONTEXT_TRACKING_OFFSTACK if HAVE_CONTEXT_TRACKING select HAVE_C_RECORDMCOUNT + select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_CONTIGUOUS select HAVE_DYNAMIC_FTRACE