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From: Nick Desaulniers <ndesaulniers@google.com>
To: Sami Tolvanen <samitolvanen@google.com>
Cc: x86@kernel.org, Kees Cook <keescook@chromium.org>,
	 Josh Poimboeuf <jpoimboe@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	 Nathan Chancellor <nathan@kernel.org>,
	Sedat Dilek <sedat.dilek@gmail.com>,
	 linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org,
	 llvm@lists.linux.dev
Subject: Re: [PATCH v4 10/15] x86/purgatory: Disable CFI
Date: Thu, 30 Sep 2021 12:05:58 -0700	[thread overview]
Message-ID: <CAKwvOdkcjAAzxTvYGSi4XD3DEFfESDTyCynQNWjdQ2zssF9sHw@mail.gmail.com> (raw)
In-Reply-To: <20210930180531.1190642-11-samitolvanen@google.com>

On Thu, Sep 30, 2021 at 11:06 AM Sami Tolvanen <samitolvanen@google.com> wrote:
>
> Disable CONFIG_CFI_CLANG for the stand-alone purgatory.ro.
>
> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>

> ---
>  arch/x86/purgatory/Makefile | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
> index 95ea17a9d20c..911954fec31c 100644
> --- a/arch/x86/purgatory/Makefile
> +++ b/arch/x86/purgatory/Makefile
> @@ -55,6 +55,10 @@ ifdef CONFIG_RETPOLINE
>  PURGATORY_CFLAGS_REMOVE                += $(RETPOLINE_CFLAGS)
>  endif
>
> +ifdef CONFIG_CFI_CLANG
> +PURGATORY_CFLAGS_REMOVE                += $(CC_FLAGS_CFI)
> +endif
> +
>  CFLAGS_REMOVE_purgatory.o      += $(PURGATORY_CFLAGS_REMOVE)
>  CFLAGS_purgatory.o             += $(PURGATORY_CFLAGS)
>
> --
> 2.33.0.800.g4c38ced690-goog
>


-- 
Thanks,
~Nick Desaulniers

  reply	other threads:[~2021-09-30 19:06 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-30 18:05 [PATCH v4 00/15] x86: Add support for Clang CFI Sami Tolvanen
2021-09-30 18:05 ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 01/15] objtool: Add CONFIG_CFI_CLANG support Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:40   ` Nick Desaulniers
2021-09-30 18:40     ` Nick Desaulniers
2021-10-06  3:36   ` Josh Poimboeuf
2021-10-06 16:18     ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 02/15] objtool: Add ASM_STACK_FRAME_NON_STANDARD Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-10-06  3:37   ` Josh Poimboeuf
2021-09-30 18:05 ` [PATCH v4 03/15] linkage: Add DECLARE_ASM_FUNC_SYMBOL Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 04/15] cfi: Add DEFINE_CFI_IMMEDIATE_RETURN_STUB Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:50   ` Nick Desaulniers
2021-09-30 18:50     ` Nick Desaulniers
2021-10-01 20:07     ` Sami Tolvanen
2021-10-01 20:07       ` Sami Tolvanen
2021-10-04 13:50   ` Peter Zijlstra
2021-10-04 19:10     ` Sami Tolvanen
2021-10-05  6:59       ` Peter Zijlstra
2021-10-05 20:29         ` Sami Tolvanen
2021-10-05 20:56           ` Peter Zijlstra
2021-10-05 21:53             ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 05/15] tracepoint: Exclude tp_stub_func from CFI checking Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:50   ` Nick Desaulniers
2021-09-30 18:50     ` Nick Desaulniers
2021-10-01 20:08     ` Sami Tolvanen
2021-10-01 20:08       ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 06/15] ftrace: Use an opaque type for functions not callable from C Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-10-06  3:29   ` Josh Poimboeuf
2021-10-06 13:02     ` Steven Rostedt
2021-10-06 13:54       ` Josh Poimboeuf
2021-10-06 14:16         ` Steven Rostedt
2021-10-06 16:31       ` Sami Tolvanen
2021-10-06 16:58         ` Steven Rostedt
2021-10-06 17:45           ` Sami Tolvanen
2021-10-06 20:43             ` Josh Poimboeuf
2021-10-06 21:10               ` Steven Rostedt
2021-10-06 21:23                 ` Josh Poimboeuf
2021-10-06 23:14                   ` Sami Tolvanen
2021-10-07  0:56                     ` Steven Rostedt
2021-09-30 18:05 ` [PATCH v4 07/15] lkdtm: Disable UNSET_SMEP with CFI Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 08/15] lkdtm: Use an opaque type for lkdtm_rodata_do_nothing Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 09/15] x86: Use an opaque type for functions not callable from C Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 10/15] x86/purgatory: Disable CFI Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 19:05   ` Nick Desaulniers [this message]
2021-09-30 19:05     ` Nick Desaulniers
2021-09-30 18:05 ` [PATCH v4 11/15] x86, relocs: Ignore __typeid__ relocations Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-10-06  3:31   ` Josh Poimboeuf
2021-10-06 16:17     ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 12/15] x86, module: " Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 13/15] x86, cpu: Use LTO for cpu.c with CFI Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 14/15] x86, kprobes: Fix optprobe_template_func type mismatch Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:05 ` [PATCH v4 15/15] x86, build: Allow CONFIG_CFI_CLANG to be selected Sami Tolvanen
2021-09-30 18:05   ` Sami Tolvanen
2021-09-30 18:38 ` [PATCH v4 00/15] x86: Add support for Clang CFI Nick Desaulniers
2021-09-30 18:38   ` Nick Desaulniers
2021-10-01 20:55   ` Sedat Dilek
2021-10-01 20:55     ` Sedat Dilek
2021-10-05 20:36 ` Josh Poimboeuf
2021-10-05 21:52   ` Sami Tolvanen
2021-10-06  2:42     ` Josh Poimboeuf

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