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From: Kees Cook <keescook@chromium.org>
To: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
	x86@kernel.org, Sami Tolvanen <samitolvanen@google.com>,
	Joao Moreira <joao@overdrivepizza.com>,
	linux-kernel@vger.kernel.org, Mark Rutland <mark.rutland@arm.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH] x86/ibt: Implement FineIBT
Date: Tue, 18 Oct 2022 22:22:15 -0700	[thread overview]
Message-ID: <202210182220.B6247EF@keescook> (raw)
In-Reply-To: <20221018233148.lgoiis2tws7caw3l@treble>

On Tue, Oct 18, 2022 at 04:31:48PM -0700, Josh Poimboeuf wrote:
> Is there a reason not to default to FineIBT if the hardware supports it?

I think it's a fine default. Given the behavioral differences, though,
I'd like to make it configurable.

> If we're going to give the user choices then my previous rant about
> documentation still applies:
> 
>   https://lkml.kernel.org/lkml/20220503220244.vyz5flk3gg3y6rbw@treble

Totally agreed. I would be happy to pen something if no one else is
interested.

-- 
Kees Cook

  reply	other threads:[~2022-10-19  5:22 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-18 13:35 [PATCH] x86/ibt: Implement FineIBT Peter Zijlstra
2022-10-18 14:43 ` David Laight
2022-10-18 15:58   ` Joao Moreira
2022-10-18 17:20     ` Kees Cook
2022-10-18 20:09       ` Joao Moreira
2022-10-19  5:33         ` Kees Cook
2022-10-18 21:27     ` David Laight
2022-10-18 14:47 ` Peter Zijlstra
2022-10-18 18:09 ` Kees Cook
2022-10-18 19:56   ` Peter Zijlstra
2022-10-18 23:31     ` Josh Poimboeuf
2022-10-19  5:22       ` Kees Cook [this message]
2022-10-19 11:38       ` Peter Zijlstra
2022-10-19  5:14     ` Kees Cook
2022-10-18 19:59   ` Peter Zijlstra
2022-10-18 21:09     ` Peter Zijlstra
2022-10-19  5:05     ` Kees Cook
2022-10-19 12:03       ` Peter Zijlstra
2022-10-19 15:22         ` Sami Tolvanen
2022-10-20 11:04           ` Peter Zijlstra
2022-10-18 19:59   ` Joao Moreira
2022-10-19  5:32     ` Kees Cook
2022-10-19 19:35       ` Joao Moreira
2022-10-18 20:05   ` Peter Zijlstra
2022-10-19  5:00     ` Kees Cook
2022-10-18 20:09   ` Peter Zijlstra
2022-10-18 20:17     ` Joao Moreira
2022-10-18 20:30       ` Peter Zijlstra
2022-10-19  4:48         ` Joao Moreira
2022-10-19  5:19           ` Kees Cook
2022-10-31 19:13             ` Joao Moreira
2022-11-01 21:39               ` Kees Cook
2022-11-01 21:50                 ` Joao Moreira
2022-10-19  5:18         ` Kees Cook
2022-10-19  5:16     ` Kees Cook
2022-10-20 11:05   ` Peter Zijlstra
2022-10-18 23:38 ` Josh Poimboeuf
2022-10-19  7:29   ` Peter Zijlstra
2022-10-21 23:08 ` Josh Poimboeuf
2022-10-22 15:03   ` Peter Zijlstra
2022-10-24 17:15     ` Sami Tolvanen
2022-10-24 18:38       ` Joao Moreira

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