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Date: Sat, 17 Apr 2021 00:02:51 +0200 From: Borislav Petkov <bp@...en8.de> To: Sami Tolvanen <samitolvanen@...gle.com> Cc: X86 ML <x86@...nel.org>, Kees Cook <keescook@...omium.org>, Josh Poimboeuf <jpoimboe@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Sedat Dilek <sedat.dilek@...il.com>, linux-hardening@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, clang-built-linux <clang-built-linux@...glegroups.com> Subject: Re: [PATCH 05/15] x86: Implement function_nocfi On Fri, Apr 16, 2021 at 02:49:23PM -0700, Sami Tolvanen wrote: > __nocfi only disables CFI checking in a function, the compiler still > changes function addresses to point to the CFI jump table, which is > why we need function_nocfi(). So call it __func_addr() or get_function_addr() or so, so that at least it is clear what this does. Also, am I going to get a steady stream of patches adding that wrapper to function names or is this it? IOW, have you built an allyesconfig to see how many locations need touching? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette
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