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Date:   Thu, 5 May 2022 18:14:25 +0100
From:   Mark Rutland <>
To:     Sami Tolvanen <>
Cc:     LKML <>,
        Kees Cook <>,
        Josh Poimboeuf <>,
        Peter Zijlstra <>, X86 ML <>,
        Catalin Marinas <>,
        Will Deacon <>,
        Nathan Chancellor <>,
        Nick Desaulniers <>,
        Joao Moreira <>,
        Sedat Dilek <>,
        Steven Rostedt <>,,
        linux-arm-kernel <>,
Subject: Re: [RFC PATCH 00/21] KCFI support

On Thu, May 05, 2022 at 09:00:39AM -0700, Sami Tolvanen wrote:
> On Thu, May 5, 2022 at 5:36 AM Mark Rutland <> wrote:
> > FWIW, a `-DLLVM_ENABLE_ASSERTIONS=ON` build also seems to work for me when
> > building a kernel with CONFIG_CFI_CLANG=y. It's much slower than a regular
> > Release build, so I'm still waiting for that to finish building a kernel, but
> > it has gotten much further through the build without issues.
> Thanks for confirming. This issue should be fixed here if you want to
> give it another try:

That works for me, building in Release mode. A defconfig + CFI_CLANG kernel
built with that builds and boots clenaly.



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