From: "Russell King (Oracle)" <linux@armlinux•org.uk>
To: Christian Schrefl <chrisi.schrefl@gmail•com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail•com>,
Alice Ryhl <aliceryhl@google•com>,
Ard Biesheuvel <ardb@kernel•org>,
Jamie Cunliffe <Jamie.Cunliffe@arm•com>,
Will Deacon <will@kernel•org>,
Catalin Marinas <catalin.marinas@arm•com>,
Miguel Ojeda <ojeda@kernel•org>,
a.hindborg@kernel•org, acourbot@nvidia•com,
akpm@linux-foundation•org, anton.ivanov@cambridgegreys•com,
bjorn3_gh@protonmail•com, boqun.feng@gmail•com, dakr@kernel•org,
david@davidgow•net, gary@garyguo•net, johannes@sipsolutions•net,
justinstitt@google•com, linux-arm-kernel@lists•infradead.org,
linux-kbuild@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-mm@kvack•org, linux-um@lists•infradead.org,
llvm@lists•linux.dev, lossin@kernel•org, mark.rutland@arm•com,
mmaurer@google•com, morbo@google•com, nathan@kernel•org,
nick.desaulniers+lkml@gmail•com, nicolas.schier@linux•dev,
nsc@kernel•org, peterz@infradead•org, richard@nod•at,
rust-for-linux@vger•kernel.org, tmgross@umich•edu,
urezki@gmail•com
Subject: Re: [PATCH v2 0/3] Inline helpers into Rust without full LTO
Date: Thu, 26 Mar 2026 15:18:07 +0000 [thread overview]
Message-ID: <acVOL5Psz6kHlhq2@shell.armlinux.org.uk> (raw)
In-Reply-To: <9cf5a94c-0f37-446c-b63d-ddac5674d220@gmail.com>
On Thu, Mar 26, 2026 at 03:31:26PM +0100, Christian Schrefl wrote:
> Hi Miguel,
>
> On 3/26/26 2:47 PM, Miguel Ojeda wrote:
> > On Thu, Mar 26, 2026 at 11:10 AM Alice Ryhl <aliceryhl@google•com> wrote:
> >>
> >> I noticed that the Makefile currently uses the arm-unknown-linux-gnueabi
> >> target. It should probably not be -linux target to avoid this? Probably
> >> it should just be armv7a-none-eabi, right? We gate HAVE_RUST on
> >> CPU_32v7, so we should not need to consider the other variants.
> >
> > I think Christian tried several targets back then and eventually
> > picked that one.
> >
> > Christian: what was the reason to pick the `-linux-` one? e.g. was
> > there something you wanted to rely on that target spec that you
> > couldn't enable or disable via `rustc` flags or similar?
>
> It should probably be fine to use armv7a-none-eabi. I've mostly used
> arm-unknown-linux-gnueabi
I'm not sure if this is still true, but I believe it used to be the case
that the -linux-gnueabi target has one behaviour for enums (fixed size)
whereas -none-eabi, the size of the type depends on the range of values
included in the enum.
Certianly, when Arm Ltd were proposing EABI, EABI had the latter
behaviour, and I think there were cases where Linux used "enum" in
its UAPI.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2026-03-26 15:18 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260203-inline-helpers-v2-0-beb8547a03c9@google.com>
2026-03-22 19:21 ` [PATCH v2 0/3] Inline helpers into Rust without full LTO Miguel Ojeda
2026-03-22 19:38 ` Miguel Ojeda
2026-03-23 13:54 ` Mark Brown
2026-03-23 14:53 ` Miguel Ojeda
2026-03-22 19:46 ` Miguel Ojeda
2026-03-23 8:49 ` Marek Szyprowski
2026-03-25 1:58 ` Miguel Ojeda
2026-03-26 21:12 ` Arnd Bergmann
2026-03-27 8:02 ` Miguel Ojeda
2026-03-27 8:16 ` Marek Szyprowski
2026-03-23 0:03 ` Miguel Ojeda
2026-03-23 3:04 ` Andrew Lunn
2026-03-23 3:24 ` Miguel Ojeda
2026-03-23 12:54 ` Andrew Lunn
2026-03-23 13:13 ` Gary Guo
2026-03-23 13:28 ` Andrew Lunn
2026-03-23 13:34 ` Miguel Ojeda
2026-03-23 14:39 ` Alice Ryhl
2026-03-23 13:14 ` Miguel Ojeda
2026-03-23 10:03 ` Russell King (Oracle)
2026-03-23 13:26 ` Miguel Ojeda
2026-03-26 10:10 ` Alice Ryhl
2026-03-26 13:47 ` Miguel Ojeda
2026-03-26 14:31 ` Christian Schrefl
2026-03-26 15:18 ` Russell King (Oracle) [this message]
2026-03-26 17:30 ` Miguel Ojeda
2026-03-30 21:09 ` Christian Schrefl
2026-03-31 11:44 ` Arnd Bergmann
2026-03-26 21:33 ` Arnd Bergmann
2026-03-27 7:56 ` Geert Uytterhoeven
2026-03-27 9:02 ` Arnd Bergmann
2026-03-27 13:41 ` Arnd Bergmann
2026-03-30 12:03 ` Geert Uytterhoeven
2026-03-30 12:13 ` Arnd Bergmann
2026-03-30 12:17 ` Geert Uytterhoeven
2026-03-26 17:31 ` Miguel Ojeda
2026-03-26 2:42 ` Nathan Chancellor
2026-03-26 17:13 ` Miguel Ojeda
2026-03-26 5:34 ` David Gow
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