Re: [PATCH v23 6/9] x86/entry: Introduce ENDBR macro
From: Borislav Petkov <bp@alien8.de>
Date: 2021-03-16 17:31:22
Also in:
linux-arch, linux-doc, linux-mm, lkml
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