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From: Boqun Feng <boqun.feng@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Matthew Wilcox" <willy@infradead.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Alex Gaynor" <alex.gaynor@gmail.com>,
	"Wedson Almeida Filho" <wedsonaf@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <benno.lossin@proton.me>,
	"Andreas Hindborg" <a.hindborg@samsung.com>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Christian Brauner" <brauner@kernel.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Arve Hjønnevåg" <arve@android.com>,
	"Todd Kjos" <tkjos@android.com>,
	"Martijn Coenen" <maco@android.com>,
	"Joel Fernandes" <joel@joelfernandes.org>,
	"Carlos Llamas" <cmllamas@google.com>,
	"Suren Baghdasaryan" <surenb@google.com>,
	"Dan Williams" <dan.j.williams@intel.com>,
	"Kees Cook" <keescook@chromium.org>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Daniel Xu" <dxu@dxuuu.xyz>,
	linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org,
	linux-fsdevel@vger.kernel.org,
	"Josh Triplett" <josh@joshtriplett.org>
Subject: Re: [PATCH 1/7] rust: file: add Rust abstraction for `struct file`
Date: Thu, 30 Nov 2023 07:25:01 -0800	[thread overview]
Message-ID: <ZWipTZysC2YL7qsq@Boquns-Mac-mini.home> (raw)
In-Reply-To: <20231130104226.GB20191@noisy.programming.kicks-ass.net>

On Thu, Nov 30, 2023 at 11:42:26AM +0100, Peter Zijlstra wrote:
> On Wed, Nov 29, 2023 at 09:08:14AM -0800, Boqun Feng wrote:
> 
> > But but but, I then realized we have asm goto in C but Rust doesn't
> > support them, and I haven't thought through how hard tht would be..
> 
> You're kidding right?
> 

I'm not, but I've found this:

	https://github.com/Amanieu/rfcs/blob/inline-asm/text/0000-inline-asm.md#asm-goto

seems to me, the plan for this is something like below:

	asm!(
		"cmp {}, 42",
		"jeq {}",
		in(reg) val,
		label { println!("a"); },
		fallthrough { println!("b"); }
    	);

But it's not implemented yet. Cc Josh in case that he knows more about
this.

Regards,
Boqun

> I thought we *finally* deprecated all compilers that didn't support
> asm-goto and x86 now mandates asm-goto to build, and then this toy
> language comes around ?
> 
> What a load of crap ... 

  reply	other threads:[~2023-11-30 15:25 UTC|newest]

Thread overview: 96+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-29 12:51 [PATCH 0/7] File abstractions needed by Rust Binder Alice Ryhl
2023-11-29 12:51 ` [PATCH 1/7] rust: file: add Rust abstraction for `struct file` Alice Ryhl
2023-11-29 15:13   ` Matthew Wilcox
2023-11-29 15:23     ` Peter Zijlstra
2023-11-29 17:08       ` Boqun Feng
2023-11-30 10:42         ` Peter Zijlstra
2023-11-30 15:25           ` Boqun Feng [this message]
2023-12-01  8:53             ` Peter Zijlstra
2023-12-01  9:19               ` Boqun Feng
2023-12-01  9:40                 ` Peter Zijlstra
2023-12-01 10:36                   ` Boqun Feng
2023-12-01 11:05                     ` Peter Zijlstra
2023-12-01  9:00             ` Peter Zijlstra
2023-12-01  9:52               ` Boqun Feng
2023-11-29 16:42     ` Alice Ryhl
2023-11-29 16:45       ` Peter Zijlstra
2023-11-30 15:02     ` Benno Lossin
2023-11-29 17:06   ` Christian Brauner
2023-11-29 21:27     ` Alice Ryhl
2023-11-29 23:17       ` Benno Lossin
2023-11-30 10:48       ` Christian Brauner
2023-11-30 12:10         ` Alice Ryhl
2023-11-30 12:36           ` Christian Brauner
2023-11-30 14:53   ` Benno Lossin
2023-11-30 14:59     ` Greg Kroah-Hartman
2023-11-30 15:46       ` Benno Lossin
2023-11-30 15:56         ` Greg Kroah-Hartman
2023-11-30 15:58         ` Theodore Ts'o
2023-11-30 16:12           ` Benno Lossin
2023-12-01  1:16             ` Theodore Ts'o
2023-12-01 12:11             ` David Laight
2023-12-01 12:27               ` Alice Ryhl
2023-12-01 15:04                 ` Theodore Ts'o
2023-12-01 15:14                   ` Benno Lossin
2023-12-01 17:25                     ` David Laight
2023-12-01 17:37                       ` Benno Lossin
2023-11-29 12:51 ` [PATCH 2/7] rust: cred: add Rust abstraction for `struct cred` Alice Ryhl
2023-11-30 16:17   ` Benno Lossin
2023-12-01  9:06     ` Alice Ryhl
2023-12-01 10:27       ` Christian Brauner
2023-12-04 15:42         ` Alice Ryhl
2023-11-29 13:11 ` [PATCH 3/7] rust: security: add abstraction for secctx Alice Ryhl
2023-11-30 16:26   ` Benno Lossin
2023-12-01 10:48     ` Alice Ryhl
2023-12-02 10:03       ` Benno Lossin
2023-11-29 13:11 ` [PATCH 4/7] rust: file: add `FileDescriptorReservation` Alice Ryhl
2023-11-29 16:14   ` Christian Brauner
2023-11-29 16:55     ` Alice Ryhl
2023-11-29 17:14       ` Alice Ryhl
2023-11-30  9:12         ` Christian Brauner
2023-11-30  9:23           ` Alice Ryhl
2023-11-30  9:09       ` Christian Brauner
2023-11-30  9:17         ` Alice Ryhl
2023-11-30 10:51           ` Christian Brauner
2023-11-30 11:54             ` Alice Ryhl
2023-11-30 12:17               ` Benno Lossin
2023-11-30 12:33                 ` Christian Brauner
2023-11-30 16:40   ` Benno Lossin
2023-12-01 11:32     ` Alice Ryhl
2023-11-29 13:12 ` [PATCH 5/7] rust: file: add `Kuid` wrapper Alice Ryhl
2023-11-29 16:28   ` Christian Brauner
2023-11-29 16:48     ` Peter Zijlstra
2023-11-30 12:46       ` Christian Brauner
2023-12-06 19:59         ` Kent Overstreet
2023-12-08 16:26           ` Peter Zijlstra
2023-12-08 19:58             ` Kent Overstreet
2023-12-08  5:28         ` comex
2023-12-08 16:19           ` Miguel Ojeda
2023-12-08 17:08             ` Nick Desaulniers
2023-12-08 17:37               ` Miguel Ojeda
2023-12-08 17:43               ` Boqun Feng
2023-12-08 20:43               ` Matthew Wilcox
2023-12-09  7:24             ` comex
2023-11-30  9:36     ` Alice Ryhl
2023-11-30 10:52       ` Christian Brauner
2023-11-30 10:36   ` Peter Zijlstra
2023-12-06 20:02     ` Kent Overstreet
2023-12-07  7:18       ` Greg Kroah-Hartman
2023-12-07  7:46         ` Kent Overstreet
2023-11-30 16:48   ` Benno Lossin
2023-11-29 13:12 ` [PATCH 6/7] rust: file: add `DeferredFdCloser` Alice Ryhl
2023-11-30 17:12   ` Benno Lossin
2023-12-01 11:35     ` Alice Ryhl
2023-12-02 10:16       ` Benno Lossin
2023-12-05 14:43         ` Alice Ryhl
2023-12-05 18:16           ` Alice Ryhl
2023-11-29 13:12 ` [PATCH 7/7] rust: file: add abstraction for `poll_table` Alice Ryhl
2023-11-30 17:42   ` Benno Lossin
2023-12-01 11:47     ` Alice Ryhl
2023-11-30 22:39   ` Boqun Feng
2023-12-01 11:50     ` Alice Ryhl
2023-11-30 22:50   ` Boqun Feng
2023-11-29 16:31 ` [PATCH 0/7] File abstractions needed by Rust Binder Christian Brauner
2023-11-29 16:48   ` Miguel Ojeda
2023-12-06 20:05   ` Kent Overstreet
2023-12-08 16:59     ` Miguel Ojeda

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