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Date: Thu, 10 Oct 2024 13:37:48 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Alice Ryhl <aliceryhl@google.com>, Matthew Maurer <mmaurer@google.com>,
	Sami Tolvanen <samitolvanen@google.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
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	rust-for-linux@vger.kernel.org
Subject: Re: [PATCH] cfi: rust: pass -Zpatchable-function-entry on all
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In-Reply-To: <20241010110344.GL14587@noisy.programming.kicks-ass.net>

On Thu, Oct 10, 2024 at 01:03:44PM +0200, Peter Zijlstra wrote:
> On Thu, Oct 10, 2024 at 11:45:07AM +0100, Mark Rutland wrote:
> 
> > What happens on x86 for ftrace and rust?
> 
> I can't seem to enable CONFIG_RUST, so I can't tell you :/

So much for the debian 'rust-all' package actually including all. Thanks
Boqun for telling me about the rustavailable make target.

Anyway, confirmed (x86_64) rust code does not have __fentry__ hooks and
cannot be traced :-(