From: David Laight <david.laight.linux@gmail.com>
To: Willy Tarreau <w@1wt.eu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Jan Engelhardt <ej@inai.de>, "H. Peter Anvin" <hpa@zytor.com>,
Greg KH <gregkh@linuxfoundation.org>,
Boqun Feng <boqun.feng@gmail.com>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
rust-for-linux <rust-for-linux@vger.kernel.org>,
David Airlie <airlied@gmail.com>,
linux-kernel@vger.kernel.org, ksummit@lists.linux.dev
Subject: Re: C aggregate passing (Rust kernel policy)
Date: Sat, 22 Feb 2025 08:41:12 +0000 [thread overview]
Message-ID: <20250222084112.23eb2856@pumpkin> (raw)
In-Reply-To: <20250222063730.GB11482@1wt.eu>
On Sat, 22 Feb 2025 07:37:30 +0100
Willy Tarreau <w@1wt.eu> wrote:
...
> Update: I found in my code a comment suggesting that it works when using
> -freg-struct (which is in fact -freg-struct-return) which works both on
> i386 and ARM.
The problem is that you need it to be an __attribute__(()) so it can
be per-function without breaking ABI.
> I just didn't remember about this and couldn't find it when
> looking at gcc docs.
I can never find anything in there either.
And then I wish they say when it was introduced.
David
next prev parent reply other threads:[~2025-02-22 8:41 UTC|newest]
Thread overview: 362+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-09 20:56 Rust kernel policy Miguel Ojeda
2025-02-18 16:08 ` Christoph Hellwig
2025-02-18 16:35 ` Jarkko Sakkinen
2025-02-18 16:39 ` Jarkko Sakkinen
2025-02-18 18:08 ` Jarkko Sakkinen
2025-02-18 21:22 ` Boqun Feng
2025-02-19 6:20 ` Jarkko Sakkinen
2025-02-19 6:35 ` Dave Airlie
2025-02-19 11:37 ` Jarkko Sakkinen
2025-02-19 13:25 ` Geert Uytterhoeven
2025-02-19 13:40 ` Jarkko Sakkinen
2025-02-19 7:05 ` Boqun Feng
2025-02-19 11:32 ` Jarkko Sakkinen
2025-02-18 17:36 ` Jiri Kosina
2025-02-20 6:33 ` Christoph Hellwig
2025-02-20 18:40 ` Alexei Starovoitov
2025-02-18 18:46 ` Miguel Ojeda
2025-02-18 21:49 ` H. Peter Anvin
2025-02-18 22:38 ` Dave Airlie
2025-02-18 22:54 ` Miguel Ojeda
2025-02-19 0:58 ` H. Peter Anvin
2025-02-19 3:04 ` Boqun Feng
2025-02-19 5:07 ` NeilBrown
2025-02-19 5:39 ` Greg KH
2025-02-19 15:05 ` Laurent Pinchart
2025-02-20 20:49 ` Lyude Paul
2025-02-21 19:24 ` Laurent Pinchart
2025-02-20 7:03 ` Martin Uecker
2025-02-20 7:10 ` Greg KH
2025-02-20 8:57 ` Martin Uecker
2025-02-20 13:46 ` Dan Carpenter
2025-02-20 14:09 ` Martin Uecker
2025-02-20 14:38 ` H. Peter Anvin
2025-02-20 15:25 ` Dan Carpenter
2025-02-20 15:49 ` Willy Tarreau
2025-02-22 15:30 ` Kent Overstreet
2025-02-20 14:53 ` Greg KH
2025-02-20 15:40 ` Martin Uecker
2025-02-21 0:46 ` Miguel Ojeda
2025-02-21 9:48 ` Dan Carpenter
2025-02-21 16:28 ` Martin Uecker
2025-02-21 17:43 ` Steven Rostedt
2025-02-21 18:07 ` Linus Torvalds
2025-02-21 18:19 ` Steven Rostedt
2025-02-21 18:31 ` Martin Uecker
2025-02-21 19:30 ` Linus Torvalds
2025-02-21 19:59 ` Martin Uecker
2025-02-21 20:11 ` Linus Torvalds
2025-02-22 7:20 ` Martin Uecker
2025-02-21 22:24 ` Steven Rostedt
2025-02-21 23:04 ` Linus Torvalds
2025-02-22 17:53 ` Kent Overstreet
2025-02-22 18:44 ` Linus Torvalds
2025-02-23 16:42 ` David Laight
2025-02-21 23:37 ` Martin Uecker
2025-02-25 22:49 ` David Laight
2025-02-22 18:42 ` Linus Torvalds
2025-02-22 9:45 ` Dan Carpenter
2025-02-22 10:25 ` Martin Uecker
2025-02-22 11:07 ` Greg KH
2025-02-21 18:23 ` Martin Uecker
2025-02-21 22:14 ` Steven Rostedt
2025-03-01 13:22 ` Askar Safin
2025-03-01 13:55 ` Martin Uecker
2025-03-02 6:50 ` Kees Cook
2025-02-21 18:11 ` Theodore Ts'o
2025-02-24 8:12 ` Dan Carpenter
2025-02-20 22:08 ` Paul E. McKenney
2025-02-22 23:42 ` Piotr Masłowski
2025-02-23 8:10 ` Martin Uecker
2025-02-23 23:31 ` comex
2025-02-24 9:08 ` Ventura Jack
2025-02-24 18:03 ` Martin Uecker
2025-02-20 12:28 ` Jan Engelhardt
2025-02-20 12:37 ` Greg KH
2025-02-20 13:23 ` H. Peter Anvin
2025-02-20 13:51 ` Willy Tarreau
2025-02-20 15:17 ` C aggregate passing (Rust kernel policy) Jan Engelhardt
2025-02-20 16:46 ` Linus Torvalds
2025-02-20 20:34 ` H. Peter Anvin
2025-02-21 8:31 ` HUANG Zhaobin
2025-02-21 18:34 ` David Laight
2025-02-21 19:12 ` Linus Torvalds
2025-02-21 20:07 ` comex
2025-02-21 21:45 ` David Laight
2025-02-22 6:32 ` Willy Tarreau
2025-02-22 6:37 ` Willy Tarreau
2025-02-22 8:41 ` David Laight [this message]
2025-02-22 9:11 ` Willy Tarreau
2025-02-21 20:06 ` Jan Engelhardt
2025-02-21 20:23 ` Laurent Pinchart
2025-02-21 20:24 ` Laurent Pinchart
2025-02-21 22:02 ` David Laight
2025-02-21 22:13 ` Bart Van Assche
2025-02-22 5:56 ` comex
2025-02-21 20:26 ` Linus Torvalds
2025-02-21 22:19 ` henrychurchill
2025-02-21 22:52 ` henrychurchill
2025-02-20 22:13 ` Rust kernel policy Paul E. McKenney
2025-02-21 5:19 ` Felipe Contreras
2025-02-21 5:36 ` Boqun Feng
2025-02-21 5:59 ` Felipe Contreras
2025-02-21 7:04 ` Dave Airlie
2025-02-24 20:27 ` Felipe Contreras
2025-02-24 20:37 ` Boqun Feng
2025-02-26 2:42 ` Felipe Contreras
2025-02-22 16:04 ` Kent Overstreet
2025-02-22 17:10 ` Ventura Jack
2025-02-22 17:34 ` Kent Overstreet
2025-02-23 2:08 ` Bart Van Assche
2025-02-19 5:53 ` Alexey Dobriyan
2025-02-19 5:59 ` Dave Airlie
2025-02-22 18:46 ` Kent Overstreet
2025-02-19 12:37 ` Miguel Ojeda
2025-02-20 11:26 ` Askar Safin
2025-02-20 12:33 ` vpotach
2025-02-19 18:52 ` Kees Cook
2025-02-19 19:08 ` Steven Rostedt
2025-02-19 19:17 ` Kees Cook
2025-02-19 20:27 ` Jason Gunthorpe
2025-02-19 20:46 ` Steven Rostedt
2025-02-19 20:52 ` Bart Van Assche
2025-02-19 21:07 ` Steven Rostedt
2025-02-20 16:05 ` Jason Gunthorpe
2025-02-20 8:13 ` Jarkko Sakkinen
2025-02-20 8:16 ` Jarkko Sakkinen
2025-02-20 11:57 ` Fiona Behrens
2025-02-20 14:07 ` Jarkko Sakkinen
2025-02-21 10:19 ` Jarkko Sakkinen
2025-02-22 12:10 ` Miguel Ojeda
2025-03-04 11:17 ` Fiona Behrens
2025-03-04 17:48 ` Jarkko Sakkinen
2025-02-20 9:55 ` Leon Romanovsky
2025-02-19 19:33 ` H. Peter Anvin
2025-02-20 6:32 ` Alexey Dobriyan
2025-02-20 6:53 ` Greg KH
2025-02-20 8:44 ` Alexey Dobriyan
2025-02-20 13:53 ` Willy Tarreau
2025-02-20 16:04 ` Jason Gunthorpe
2025-02-20 12:01 ` H. Peter Anvin
2025-02-20 12:13 ` H. Peter Anvin
2025-02-20 23:42 ` Miguel Ojeda
2025-02-22 15:21 ` Kent Overstreet
2025-02-20 6:42 ` Christoph Hellwig
2025-02-20 23:44 ` Miguel Ojeda
2025-02-21 15:24 ` Simona Vetter
2025-02-22 12:10 ` Miguel Ojeda
2025-02-26 13:17 ` Fiona Behrens
2025-02-21 0:39 ` Linus Torvalds
2025-02-21 12:16 ` Danilo Krummrich
2025-02-21 15:59 ` Steven Rostedt
2025-02-23 18:03 ` Laurent Pinchart
2025-02-23 18:31 ` Linus Torvalds
2025-02-26 16:05 ` Jason Gunthorpe
2025-02-26 19:32 ` Linus Torvalds
2025-02-19 8:05 ` Dan Carpenter
2025-02-19 14:14 ` James Bottomley
2025-02-19 14:30 ` Geert Uytterhoeven
2025-02-19 14:46 ` Martin K. Petersen
2025-02-19 14:51 ` Bartosz Golaszewski
2025-02-19 15:15 ` James Bottomley
2025-02-19 15:33 ` Willy Tarreau
2025-02-19 15:45 ` Laurent Pinchart
2025-02-19 15:46 ` James Bottomley
2025-02-19 15:56 ` Willy Tarreau
2025-02-19 16:07 ` Laurent Pinchart
2025-02-19 16:15 ` Willy Tarreau
2025-02-19 16:32 ` Laurent Pinchart
2025-02-19 16:34 ` Willy Tarreau
2025-02-19 16:33 ` Steven Rostedt
2025-02-19 16:47 ` Andrew Lunn
2025-02-19 18:22 ` Jarkko Sakkinen
2025-02-20 6:26 ` Alexey Dobriyan
2025-02-20 15:37 ` Steven Rostedt
2025-02-19 17:00 ` Martin K. Petersen
2025-02-19 15:13 ` Steven Rostedt
2025-02-19 14:05 ` James Bottomley
2025-02-19 15:08 ` Miguel Ojeda
2025-02-19 16:03 ` James Bottomley
2025-02-19 16:44 ` Miguel Ojeda
2025-02-19 17:06 ` Theodore Ts'o
2025-02-20 23:40 ` Miguel Ojeda
2025-02-22 15:03 ` Kent Overstreet
2025-02-20 16:03 ` James Bottomley
2025-02-20 23:47 ` Miguel Ojeda
2025-02-20 6:48 ` Christoph Hellwig
2025-02-20 12:56 ` James Bottomley
-- strict thread matches above, loose matches on Subject: below --
2025-02-22 10:06 C aggregate passing (Rust kernel policy) Ventura Jack
2025-02-22 14:15 ` Gary Guo
2025-02-22 15:03 ` Ventura Jack
2025-02-22 18:54 ` Kent Overstreet
2025-02-22 19:18 ` Linus Torvalds
2025-02-22 20:00 ` Kent Overstreet
2025-02-22 20:54 ` H. Peter Anvin
2025-02-22 21:22 ` Kent Overstreet
2025-02-22 21:46 ` Linus Torvalds
2025-02-22 22:34 ` Kent Overstreet
2025-02-22 23:56 ` Jan Engelhardt
2025-02-22 22:12 ` David Laight
2025-02-22 22:46 ` Kent Overstreet
2025-02-22 23:50 ` H. Peter Anvin
2025-02-23 0:06 ` Kent Overstreet
2025-02-22 21:22 ` Linus Torvalds
2025-02-23 15:30 ` Ventura Jack
2025-02-23 16:28 ` David Laight
2025-02-24 0:27 ` Gary Guo
2025-02-24 9:57 ` Ventura Jack
2025-02-24 10:31 ` Benno Lossin
2025-02-24 12:21 ` Ventura Jack
2025-02-24 12:47 ` Benno Lossin
2025-02-24 16:57 ` Ventura Jack
2025-02-24 22:03 ` Benno Lossin
2025-02-24 23:04 ` Ventura Jack
2025-02-25 22:38 ` Benno Lossin
2025-02-25 22:47 ` Miguel Ojeda
2025-02-25 23:03 ` Benno Lossin
2025-02-24 12:58 ` Theodore Ts'o
2025-02-24 14:47 ` Miguel Ojeda
2025-02-24 14:54 ` Miguel Ojeda
2025-02-24 16:42 ` Philip Herron
2025-02-25 15:55 ` Ventura Jack
2025-02-25 17:30 ` Arthur Cohen
2025-02-26 11:38 ` Ralf Jung
2025-02-24 15:43 ` Miguel Ojeda
2025-02-24 17:24 ` Kent Overstreet
2025-02-25 16:12 ` Alice Ryhl
2025-02-25 17:21 ` Ventura Jack
2025-02-25 17:36 ` Alice Ryhl
2025-02-25 18:16 ` H. Peter Anvin
2025-02-25 20:21 ` Kent Overstreet
2025-02-25 20:37 ` H. Peter Anvin
2025-02-26 13:03 ` Ventura Jack
2025-02-26 13:53 ` Miguel Ojeda
2025-02-26 14:07 ` Ralf Jung
2025-02-26 14:26 ` James Bottomley
2025-02-26 14:37 ` Ralf Jung
2025-02-26 14:39 ` Greg KH
2025-02-26 14:45 ` James Bottomley
2025-02-26 16:00 ` Steven Rostedt
2025-02-26 16:42 ` James Bottomley
2025-02-26 16:47 ` Kent Overstreet
2025-02-26 16:57 ` Steven Rostedt
2025-02-26 17:41 ` Kent Overstreet
2025-02-26 17:47 ` Steven Rostedt
2025-02-26 22:07 ` Josh Poimboeuf
2025-03-02 12:19 ` David Laight
2025-02-26 17:11 ` Miguel Ojeda
2025-02-26 17:42 ` Kent Overstreet
2025-02-26 12:36 ` Ventura Jack
2025-02-26 13:52 ` Miguel Ojeda
2025-02-26 15:21 ` Ventura Jack
2025-02-26 16:06 ` Ralf Jung
2025-02-26 17:49 ` Miguel Ojeda
2025-02-26 18:36 ` Ventura Jack
2025-02-26 14:14 ` Ralf Jung
2025-02-26 15:40 ` Ventura Jack
2025-02-26 16:10 ` Ralf Jung
2025-02-26 16:50 ` Ventura Jack
2025-02-26 21:39 ` Ralf Jung
2025-02-27 15:11 ` Ventura Jack
2025-02-27 15:32 ` Ralf Jung
2025-02-25 18:54 ` Linus Torvalds
2025-02-25 19:47 ` Kent Overstreet
2025-02-25 20:25 ` Linus Torvalds
2025-02-25 20:55 ` Kent Overstreet
2025-02-25 21:24 ` Linus Torvalds
2025-02-25 23:34 ` Kent Overstreet
2025-02-26 11:57 ` Gary Guo
2025-02-27 14:43 ` Ventura Jack
2025-02-26 14:26 ` Ventura Jack
2025-02-25 22:45 ` Miguel Ojeda
2025-02-26 0:05 ` Miguel Ojeda
2025-02-25 22:42 ` Miguel Ojeda
2025-02-26 14:01 ` Ralf Jung
2025-02-26 13:54 ` Ralf Jung
2025-02-26 17:59 ` Linus Torvalds
2025-02-26 19:01 ` Paul E. McKenney
2025-02-26 20:00 ` Martin Uecker
2025-02-26 21:14 ` Linus Torvalds
2025-02-26 21:21 ` Linus Torvalds
2025-02-26 22:54 ` David Laight
2025-02-27 0:35 ` Paul E. McKenney
2025-02-26 21:26 ` Steven Rostedt
2025-02-26 21:37 ` Steven Rostedt
2025-02-26 21:42 ` Linus Torvalds
2025-02-26 21:56 ` Steven Rostedt
2025-02-26 22:13 ` Steven Rostedt
2025-02-26 22:22 ` Linus Torvalds
2025-02-26 22:35 ` Steven Rostedt
2025-02-26 23:18 ` Linus Torvalds
2025-02-26 23:28 ` Steven Rostedt
2025-02-27 0:04 ` Linus Torvalds
2025-02-27 20:47 ` David Laight
2025-02-27 21:33 ` Steven Rostedt
2025-02-28 21:29 ` Paul E. McKenney
2025-02-27 21:41 ` Paul E. McKenney
2025-02-27 22:20 ` David Laight
2025-02-27 22:40 ` Paul E. McKenney
2025-02-28 7:44 ` Ralf Jung
2025-02-28 15:41 ` Kent Overstreet
2025-02-28 15:46 ` Boqun Feng
2025-02-28 16:04 ` Kent Overstreet
2025-02-28 16:13 ` Boqun Feng
2025-02-28 16:21 ` Kent Overstreet
2025-02-28 16:40 ` Boqun Feng
2025-03-04 18:12 ` Ralf Jung
2025-02-26 22:27 ` Kent Overstreet
2025-02-26 23:16 ` Linus Torvalds
2025-02-27 0:17 ` Kent Overstreet
2025-02-27 0:26 ` comex
2025-02-27 18:33 ` Ralf Jung
2025-02-27 19:15 ` Linus Torvalds
2025-02-27 19:55 ` Kent Overstreet
2025-02-27 20:28 ` Linus Torvalds
2025-02-28 7:53 ` Ralf Jung
2025-03-06 19:16 ` Ventura Jack
2025-02-27 4:18 ` Martin Uecker
2025-02-27 5:52 ` Linus Torvalds
2025-02-27 6:56 ` Martin Uecker
2025-02-27 14:29 ` Steven Rostedt
2025-02-27 17:35 ` Paul E. McKenney
2025-02-27 18:13 ` Kent Overstreet
2025-02-27 19:10 ` Paul E. McKenney
2025-02-27 18:00 ` Ventura Jack
2025-02-27 18:44 ` Ralf Jung
2025-02-27 14:21 ` Ventura Jack
2025-02-27 15:27 ` H. Peter Anvin
2025-02-28 8:08 ` Ralf Jung
2025-02-28 8:32 ` Martin Uecker
2025-02-26 20:25 ` Kent Overstreet
2025-02-26 20:34 ` Andy Lutomirski
2025-02-26 22:45 ` David Laight
2025-02-22 19:41 ` Miguel Ojeda
2025-02-22 20:49 ` Kent Overstreet
2025-02-26 11:34 ` Ralf Jung
2025-02-26 14:57 ` Ventura Jack
2025-02-26 16:32 ` Ralf Jung
2025-02-26 18:09 ` Ventura Jack
2025-02-26 22:28 ` Ralf Jung
2025-02-26 23:08 ` David Laight
2025-02-27 13:55 ` Ralf Jung
2025-02-27 17:33 ` Ventura Jack
2025-02-27 17:58 ` Ralf Jung
2025-02-27 19:06 ` Ventura Jack
2025-02-27 19:45 ` Ralf Jung
2025-02-27 20:22 ` Kent Overstreet
2025-02-27 22:18 ` David Laight
2025-02-27 23:18 ` Kent Overstreet
2025-02-28 7:38 ` Ralf Jung
2025-02-28 20:48 ` Ventura Jack
2025-02-28 20:41 ` Ventura Jack
2025-02-28 22:13 ` Geoffrey Thomas
2025-03-01 14:19 ` Ventura Jack
2025-03-04 18:24 ` Ralf Jung
2025-03-06 18:49 ` Ventura Jack
2025-02-27 17:58 ` Miguel Ojeda
2025-02-27 19:25 ` Ventura Jack
2025-02-26 19:07 ` Martin Uecker
2025-02-26 19:23 ` Ralf Jung
2025-02-26 20:22 ` Martin Uecker
[not found] <CAFJgqgRZ1w0ONj2wbcczx2=boXYHoLOd=-ke7tHGBAcifSfPUw@mail.gmail.com>
2025-02-25 15:42 ` H. Peter Anvin
2025-02-25 16:45 ` Ventura Jack
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