From: Mark Brown <broonie@kernel.org>
To: Julien Thierry <jthierry@redhat.com>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Masahiro Yamada <masahiroy@kernel.org>,
Kees Cook <keescook@chromium.org>,
Michal Marek <michal.lkml@markovi.net>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-efi <linux-efi@vger.kernel.org>,
linux-hardening@vger.kernel.org
Subject: Re: [RFC PATCH 00/17] objtool: add base support for arm64
Date: Thu, 21 Jan 2021 14:23:42 +0000 [thread overview]
Message-ID: <20210121142342.GD4588@sirena.org.uk> (raw)
In-Reply-To: <6e21cd51-017e-2135-ed9d-33a60f22a457@redhat.com>
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On Thu, Jan 21, 2021 at 02:23:53PM +0100, Julien Thierry wrote:
> On 1/21/21 12:08 PM, Ard Biesheuvel wrote:
> > I am not aware of any plans to enable this in GCC, but the Clang
> > implementation is definitely intended for production use (it's a CFI
> > feature for ROP/JOP mitigation)
> I think most people interested in livepatching are using GCC built kernels,
> but I could be mistaken (althought in the long run, both compilers should be
> supported, and yes, I realize the objtool solution currently only would
> support GCC).
There definitely seem to be some users interested in both livepatch and
clang built kernels so it might come up relatively quickly.
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Julien Thierry <jthierry@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Michal Marek <michal.lkml@markovi.net>,
Kees Cook <keescook@chromium.org>,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-efi <linux-efi@vger.kernel.org>,
linux-hardening@vger.kernel.org,
Josh Poimboeuf <jpoimboe@redhat.com>,
Will Deacon <will@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC PATCH 00/17] objtool: add base support for arm64
Date: Thu, 21 Jan 2021 14:23:42 +0000 [thread overview]
Message-ID: <20210121142342.GD4588@sirena.org.uk> (raw)
In-Reply-To: <6e21cd51-017e-2135-ed9d-33a60f22a457@redhat.com>
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On Thu, Jan 21, 2021 at 02:23:53PM +0100, Julien Thierry wrote:
> On 1/21/21 12:08 PM, Ard Biesheuvel wrote:
> > I am not aware of any plans to enable this in GCC, but the Clang
> > implementation is definitely intended for production use (it's a CFI
> > feature for ROP/JOP mitigation)
> I think most people interested in livepatching are using GCC built kernels,
> but I could be mistaken (althought in the long run, both compilers should be
> supported, and yes, I realize the objtool solution currently only would
> support GCC).
There definitely seem to be some users interested in both livepatch and
clang built kernels so it might come up relatively quickly.
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next prev parent reply other threads:[~2021-01-21 14:26 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 17:37 [RFC PATCH 00/17] objtool: add base support for arm64 Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 01/17] tools: Add some generic functions and headers Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 02/17] tools: arm64: Make aarch64 instruction decoder available to tools Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 03/17] tools: bug: Remove duplicate definition Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 04/17] objtool: arm64: Add base definition for arm64 backend Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 05/17] objtool: arm64: Decode add/sub instructions Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 06/17] objtool: arm64: Decode jump and call related instructions Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 07/17] objtool: arm64: Decode other system instructions Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 08/17] objtool: arm64: Decode load/store instructions Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 09/17] objtool: arm64: Decode LDR instructions Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 10/17] objtool: arm64: Accept padding in code sections Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 11/17] efi: libstub: Ignore relocations for .discard sections Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 12/17] gcc-plugins: objtool: Add plugin to detect switch table on arm64 Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-27 22:15 ` Nick Desaulniers
2021-01-27 22:15 ` Nick Desaulniers
2021-01-27 23:26 ` Josh Poimboeuf
2021-01-27 23:26 ` Josh Poimboeuf
2021-01-29 18:10 ` Nick Desaulniers
2021-01-29 18:10 ` Nick Desaulniers
2021-02-01 21:44 ` Josh Poimboeuf
2021-02-01 21:44 ` Josh Poimboeuf
2021-02-01 23:17 ` Nick Desaulniers
2021-02-01 23:17 ` Nick Desaulniers
2021-02-02 0:02 ` Josh Poimboeuf
2021-02-02 0:02 ` Josh Poimboeuf
2021-02-02 14:24 ` David Laight
2021-02-02 14:24 ` David Laight
2021-02-02 22:33 ` Nick Desaulniers
2021-02-02 22:33 ` Nick Desaulniers
2021-02-02 23:36 ` Josh Poimboeuf
2021-02-02 23:36 ` Josh Poimboeuf
2021-02-02 23:52 ` Nick Desaulniers
2021-02-02 23:52 ` Nick Desaulniers
2021-02-02 8:57 ` Julien Thierry
2021-02-02 8:57 ` Julien Thierry
2021-02-02 23:01 ` Nick Desaulniers
2021-02-02 23:01 ` Nick Desaulniers
2021-02-03 0:14 ` Josh Poimboeuf
2021-02-03 0:14 ` Josh Poimboeuf
2021-02-03 11:57 ` Peter Zijlstra
2021-02-03 11:57 ` Peter Zijlstra
2021-02-03 13:04 ` Mark Brown
2021-02-03 13:04 ` Mark Brown
2021-02-03 13:58 ` Mark Rutland
2021-02-03 13:58 ` Mark Rutland
2021-02-03 8:11 ` Julien Thierry
2021-02-03 8:11 ` Julien Thierry
2021-02-09 16:30 ` Daniel Kiss
2021-02-09 16:30 ` Daniel Kiss
2021-01-20 17:37 ` [RFC PATCH 13/17] objtool: arm64: Implement functions to add switch tables alternatives Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 14/17] objtool: arm64: Cache section with switch table information Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 15/17] objtool: arm64: Handle supported relocations in alternatives Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:37 ` [RFC PATCH 16/17] objtool: arm64: Ignore replacement section for alternative callback Julien Thierry
2021-01-20 17:37 ` Julien Thierry
2021-01-20 17:38 ` [RFC PATCH 17/17] objtool: arm64: Enable stack validation for arm64 Julien Thierry
2021-01-20 17:38 ` Julien Thierry
2021-01-21 5:39 ` kernel test robot
2021-01-21 9:03 ` [RFC PATCH 00/17] objtool: add base support " Ard Biesheuvel
2021-01-21 9:03 ` Ard Biesheuvel
2021-01-21 10:26 ` Julien Thierry
2021-01-21 10:26 ` Julien Thierry
2021-01-21 11:08 ` Ard Biesheuvel
2021-01-21 11:08 ` Ard Biesheuvel
2021-01-21 11:23 ` Peter Zijlstra
2021-01-21 11:23 ` Peter Zijlstra
2021-01-21 11:48 ` Ard Biesheuvel
2021-01-21 11:48 ` Ard Biesheuvel
2021-01-21 18:54 ` Josh Poimboeuf
2021-01-21 18:54 ` Josh Poimboeuf
2021-01-22 17:43 ` Mark Brown
2021-01-22 17:43 ` Mark Brown
2021-01-22 17:54 ` Ard Biesheuvel
2021-01-22 17:54 ` Ard Biesheuvel
2021-01-28 22:10 ` Madhavan T. Venkataraman
2021-01-28 22:10 ` Madhavan T. Venkataraman
2021-01-29 15:47 ` Mark Brown
2021-01-22 21:15 ` Madhavan T. Venkataraman
2021-01-22 21:15 ` Madhavan T. Venkataraman
2021-01-22 21:43 ` Ard Biesheuvel
2021-01-22 21:43 ` Ard Biesheuvel
2021-01-22 21:44 ` Madhavan T. Venkataraman
2021-01-22 21:44 ` Madhavan T. Venkataraman
2021-01-25 21:19 ` Josh Poimboeuf
2021-01-25 21:19 ` Josh Poimboeuf
2021-01-22 21:16 ` Madhavan T. Venkataraman
2021-01-22 21:16 ` Madhavan T. Venkataraman
2021-01-21 13:23 ` Julien Thierry
2021-01-21 13:23 ` Julien Thierry
2021-01-21 14:23 ` Mark Brown [this message]
2021-01-21 14:23 ` Mark Brown
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