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Date: Fri, 1 Oct 2021 13:07:24 -0700 From: Sami Tolvanen <samitolvanen@...gle.com> To: Nick Desaulniers <ndesaulniers@...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>, Sedat Dilek <sedat.dilek@...il.com>, linux-hardening@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, llvm@...ts.linux.dev Subject: Re: [PATCH v4 04/15] cfi: Add DEFINE_CFI_IMMEDIATE_RETURN_STUB On Thu, Sep 30, 2021 at 11:50 AM Nick Desaulniers <ndesaulniers@...gle.com> wrote: > > On Thu, Sep 30, 2021 at 11:05 AM Sami Tolvanen <samitolvanen@...gle.com> wrote: > > > > This change introduces the DEFINE_CFI_IMMEDIATE_RETURN_STUB macro, > > which defines a stub function that immediately returns and when > > defined in the core kernel, always passes indirect call checking > > with CONFIG_CFI_CLANG. Note that this macro should only be used when > > a stub cannot be called using the correct function type. > > Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com> > > Seems like the only use is in patch 5/15. Probably could be squashed... I would prefer to keep these separate, but if everyone thinks that's unnecessary, I'm happy to combine them. Sami
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