From: "Alexandre Courbot" <acourbot@nvidia.com>
To: <alistair23@gmail.com>
Cc: <lukas@wunner.de>, <linux-cxl@vger.kernel.org>,
<akpm@linux-foundation.org>, <Jonathan.Cameron@huawei.com>,
<rust-for-linux@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<jic23@kernel.org>, <bhelgaas@google.com>,
<alistair@alistair23.me>, <djbw@kernel.org>,
<linux-pci@vger.kernel.org>, <wilfred.mallawa@wdc.com>,
<a.hindborg@kernel.org>, <gregkh@linuxfoundation.org>,
<alex.gaynor@gmail.com>, <aliceryhl@google.com>,
<benno.lossin@proton.me>, <boqun.feng@gmail.com>,
<bjorn3_gh@protonmail.com>, <tmgross@umich.edu>,
<gary@garyguo.net>, <ojeda@kernel.org>,
"Alistair Francis" <alistair.francis@wdc.com>
Subject: Re: [PATCH v4 02/22] rust: transmute: add `cast_slice[_mut]` functions
Date: Thu, 15 Oct 2026 00:16:33 +0900 [thread overview]
Message-ID: <DM4NSHDSYI0V.23GB4GJJ2PCOO@nvidia.com> (raw)
In-Reply-To: <20260928011123.450800-3-alistair.francis@wdc.com>
On Mon Sep 28, 2026 at 10:11 AM JST, alistair23 wrote:
> From: Benno Lossin <benno.lossin@proton.me>
>
> Add functions to make casting slices only one `unsafe` block.
>
> Signed-off-by: Benno Lossin <benno.lossin@proton.me>
> Message-ID: <20250814124424.516191-2-lossin@kernel.org>
> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
> ---
> rust/kernel/transmute.rs | 71 +++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 70 insertions(+), 1 deletion(-)
`transmute.rs` has been made obsolete by the introduction of `zerocopy`,
so I dont think the timing is right to extend it, especially since the
new methods allow to basically cast any slice into any other without
any constraint. Thankfully I don't think we need this at all: the only
users for these new methods are the `Deref` implementations in patch 3,
and I believe these can be implemented better (I'll comment there).
So basically I think this patch can be dropped entirely.
next prev parent reply other threads:[~2026-10-14 15:16 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-28 1:11 [PATCH v4 00/22] lib: Rust implementation of SPDM alistair23
2026-09-28 1:11 ` [PATCH v4 01/22] virt: coco: change tsm_register() to use a const struct alistair23
2026-09-28 1:41 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 02/22] rust: transmute: add `cast_slice[_mut]` functions alistair23
2026-09-28 1:35 ` sashiko-bot
2026-10-14 15:16 ` Alexandre Courbot [this message]
2026-09-28 1:11 ` [PATCH v4 03/22] rust: create basic untrusted data API alistair23
2026-09-28 1:41 ` sashiko-bot
2026-10-14 15:17 ` Alexandre Courbot
2026-09-28 1:11 ` [PATCH v4 04/22] rust: validate: add `Validate` trait alistair23
2026-09-28 1:41 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 05/22] X.509: Make certificate parser public alistair23
2026-09-28 1:39 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 06/22] X.509: Parse Subject Alternative Name in certificates alistair23
2026-09-28 1:39 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 07/22] X.509: Move certificate length retrieval into new helper alistair23
2026-09-28 1:36 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 08/22] rust: add bindings for hash.h alistair23
2026-09-28 1:43 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 09/22] rust: error: impl From<FromBytesWithNulError> for Kernel Error alistair23
2026-09-28 1:36 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 10/22] lib: rspdm: Initial commit of Rust SPDM alistair23
2026-09-28 1:45 ` sashiko-bot
2026-10-14 15:17 ` Alexandre Courbot
2026-09-28 1:11 ` [PATCH v4 11/22] PCI/TSM: Rename pf0 to host alistair23
2026-09-28 1:41 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 12/22] PCI/TSM: Support connecting to PCIe CMA devices alistair23
2026-09-28 1:43 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 13/22] PCI/CMA: Add a PCI TSM CMA driver using SPDM alistair23
2026-09-28 1:43 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 14/22] PCI/CMA: Validate Subject Alternative Name in certificates alistair23
2026-09-28 1:44 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 15/22] lib: rspdm: Support SPDM get_version alistair23
2026-09-28 1:39 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 16/22] lib: rspdm: Support SPDM get_capabilities alistair23
2026-09-28 1:41 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 17/22] lib: rspdm: Support SPDM negotiate_algorithms alistair23
2026-09-28 1:45 ` sashiko-bot
2026-09-28 1:11 ` [PATCH v4 18/22] lib: rspdm: Support SPDM get_digests alistair23
2026-09-28 1:45 ` sashiko-bot
2026-09-28 1:31 ` [PATCH v4 19/22] lib: rspdm: Support SPDM get_certificate alistair23
2026-09-28 1:31 ` [PATCH v4 20/22] lib: rspdm: Support SPDM certificate validation alistair23
2026-09-28 1:47 ` sashiko-bot
2026-09-28 1:31 ` [PATCH v4 21/22] rust: allow extracting the buffer from a CString alistair23
2026-09-28 1:41 ` sashiko-bot
2026-09-28 1:31 ` [PATCH v4 22/22] lib: rspdm: Support SPDM challenge alistair23
2026-09-28 1:46 ` sashiko-bot
2026-09-28 1:43 ` [PATCH v4 19/22] lib: rspdm: Support SPDM get_certificate sashiko-bot
2026-10-14 15:16 ` [PATCH v4 00/22] lib: Rust implementation of SPDM Alexandre Courbot
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