linux-kernel - Re: [PATCH v2 2/3] scripts: generate_rust

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Date: Tue, 27 Feb 2024 17:48:13 +0000
From: Conor Dooley <conor@...nel.org>
To: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Conor Dooley <conor.dooley@...rochip.com>,
	linux-riscv@...ts.infradead.org, Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Jonathan Corbet <corbet@....net>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Tom Rix <trix@...hat.com>, rust-for-linux@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev
Subject: Re: [PATCH v2 2/3] scripts: generate_rust_target: enable building on
 RISC-V

On Tue, Feb 27, 2024 at 03:47:29PM +0100, Miguel Ojeda wrote:

> Did you try `-Ctarget-feature=-c`? i.e. as far as I know, you can
> disable target features even if they are enabled from the built-in.

No, I didn't actually try anything. Between trying to test the kcfi
stuff on arm64 and the other work I was doing today I did not have a
chance to actually play with that yet. It comes down to you though I
suppose - would you rather have generate_rust_target enable the
compressed instructions depending on the config option or have the
Makefile disable it if compressed instructions are not enabled and use
a builtin target?

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