On Tue, 28 May 2024 14:58:03 +0000 Alice Ryhl <aliceryhl@xxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxxx>
