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From: Steven Rostedt <rostedt@goodmis.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Sami Tolvanen <samitolvanen@google.com>,
	x86@kernel.org, Kees Cook <keescook@chromium.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Nathan Chancellor <nathan@kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Sedat Dilek <sedat.dilek@gmail.com>,
	linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev
Subject: Re: [PATCH v4 06/15] ftrace: Use an opaque type for functions not callable from C
Date: Wed, 6 Oct 2021 10:16:54 -0400	[thread overview]
Message-ID: <20211006101654.6a5be402@gandalf.local.home> (raw)
In-Reply-To: <20211006135417.tvdns3ykpgupi47q@treble>

On Wed, 6 Oct 2021 06:54:17 -0700
Josh Poimboeuf <jpoimboe@redhat.com> wrote:

> But this macro is used in other places as well:
> 
>   https://lkml.kernel.org/r/20210930180531.1190642-10-samitolvanen@google.com
> 
> And many of them aren't internal to a function like the above symbols,
> they're actual functions that are called in other ways.
> 
> DECLARE_UNCALLED_FROM_C() ?

  DECLARE_NOT_CALLED_FROM_C() ;-)

Straight and to the point!

"uncalled" is a strange word.

-- Steve

  reply	other threads:[~2021-10-06 14:16 UTC|newest]

Thread overview: 50+ 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 ` [PATCH v4 01/15] objtool: Add CONFIG_CFI_CLANG support Sami Tolvanen
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
2021-10-06  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 ` [PATCH v4 04/15] cfi: Add DEFINE_CFI_IMMEDIATE_RETURN_STUB Sami Tolvanen
2021-09-30 18:50   ` Nick Desaulniers
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 18:50   ` Nick Desaulniers
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
2021-10-06  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 [this message]
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 ` [PATCH v4 08/15] lkdtm: Use an opaque type for lkdtm_rodata_do_nothing 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 ` [PATCH v4 10/15] x86/purgatory: Disable CFI Sami Tolvanen
2021-09-30 19:05   ` Nick Desaulniers
2021-09-30 18:05 ` [PATCH v4 11/15] x86, relocs: Ignore __typeid__ relocations 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 ` [PATCH v4 13/15] x86, cpu: Use LTO for cpu.c with CFI 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 ` [PATCH v4 15/15] x86, build: Allow CONFIG_CFI_CLANG to be selected Sami Tolvanen
2021-09-30 18:38 ` [PATCH v4 00/15] x86: Add support for Clang CFI Nick Desaulniers
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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