From: Andrew Morton <akpm@linux-foundation.org>
To: Alice Ryhl <aliceryhl@google.com>
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
"Matthew Wilcox" <willy@infradead.org>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Kees Cook" <keescook@chromium.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Wedson Almeida Filho" <wedsonaf@gmail.com>,
"Boqun Feng" <boqun.feng@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>,
"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>,
"Arnd Bergmann" <arnd@arndb.de>,
"Trevor Gross" <tmgross@umich.edu>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
rust-for-linux@vger.kernel.org,
"Christian Brauner" <brauner@kernel.org>
Subject: Re: [PATCH v7 2/4] uaccess: always export _copy_[from|to]_user with CONFIG_RUST
Date: Tue, 11 Jun 2024 14:44:09 -0700 [thread overview]
Message-ID: <20240611144409.21840c70387b29eddcf5c2f5@linux-foundation.org> (raw)
In-Reply-To: <20240528-alice-mm-v7-2-78222c31b8f4@google.com>
On Tue, 28 May 2024 14:58:03 +0000 Alice Ryhl <aliceryhl@google.com> wrote:
> Rust code needs to be able to access _copy_from_user and _copy_to_user
> so that it can skip the check_copy_size check in cases where the length
> is known at compile-time, mirroring the logic for when C code will skip
> check_copy_size. To do this, we ensure that exported versions of these
> methods are available when CONFIG_RUST is enabled.
>
> Alice has verified that this patch passes the CONFIG_TEST_USER_COPY test
> on x86 using the Android cuttlefish emulator.
>
> ...
>
> include/linux/uaccess.h | 46 ++++++++++++++++++++++++++++++++--------------
> lib/usercopy.c | 30 ++++--------------------------
> 2 files changed, 36 insertions(+), 40 deletions(-)
Acked-by: Andrew Morton <akpm@linux-foundation.org>
next prev parent reply other threads:[~2024-06-11 21:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-28 14:58 [PATCH v7 0/4] Memory management patches needed by Rust Binder Alice Ryhl
2024-05-28 14:58 ` [PATCH v7 1/4] rust: uaccess: add userspace pointers Alice Ryhl
2024-05-28 14:58 ` [PATCH v7 2/4] uaccess: always export _copy_[from|to]_user with CONFIG_RUST Alice Ryhl
2024-06-11 21:44 ` Andrew Morton [this message]
2024-09-22 7:08 ` Sasha Levin
2024-09-22 7:52 ` Arnd Bergmann
2024-09-22 13:16 ` Sasha Levin
2024-05-28 14:58 ` [PATCH v7 3/4] rust: uaccess: add typed accessors for userspace pointers Alice Ryhl
2024-05-28 14:58 ` [PATCH v7 4/4] rust: add abstraction for `struct page` Alice Ryhl
2024-06-10 20:46 ` Abdiel Janulgue
2024-06-11 8:51 ` Alice Ryhl
2024-07-09 8:02 ` [PATCH v7 0/4] Memory management patches needed by Rust Binder Miguel Ojeda
2024-07-09 9:46 ` Alice Ryhl
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240611144409.21840c70387b29eddcf5c2f5@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=a.hindborg@samsung.com \
--cc=alex.gaynor@gmail.com \
--cc=aliceryhl@google.com \
--cc=arnd@arndb.de \
--cc=arve@android.com \
--cc=benno.lossin@proton.me \
--cc=bjorn3_gh@protonmail.com \
--cc=boqun.feng@gmail.com \
--cc=brauner@kernel.org \
--cc=cmllamas@google.com \
--cc=gary@garyguo.net \
--cc=gregkh@linuxfoundation.org \
--cc=joel@joelfernandes.org \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=maco@android.com \
--cc=ojeda@kernel.org \
--cc=rust-for-linux@vger.kernel.org \
--cc=surenb@google.com \
--cc=tkjos@android.com \
--cc=tmgross@umich.edu \
--cc=viro@zeniv.linux.org.uk \
--cc=wedsonaf@gmail.com \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox