On Tue, Mar 16, 2021 at 10:12:39AM -0700, Yu, Yu-cheng wrote: > Alternatively, there is another compiler-defined macro _CET_ENDBR that can > be used. We can put the following in calling.h: Not calling.h - this is apparently needed in vdso code only so I guess some header there, arch/x86/include/asm/vdso.h maybe? In the #else /* __ASSEMBLER__ */ branch maybe... > #ifdef __CET__ > #include <cet.h> > #else > #define _CET_ENDBR > #endif > > and then use _CET_ENDBR in other files. How is that? What does that macro do? Issue an ENDBR only? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette