On Tue Aug 26, 2025 at 6:07 AM CEST, Alexandre Courbot wrote: > `FromBytes::from_bytes` comes with a few practical limitations: > > - It requires the bytes slice to have the same alignment as the returned > type, which might not be guaranteed in the case of a byte stream, > - It returns a reference, requiring the returned type to implement > `Clone` if one wants to keep the value for longer than the lifetime of > the slice.
I think that any `Sized` type that can implement `FromBytes` also can implement `Copy`, so I don't feel like the last point is a strong one. But the unaligned byte stream is motivation enough :) > To overcome these when needed, add a `from_bytes_copy` with a default > implementation in the trait. `from_bytes_copy` returns an owned value > that is populated using an unaligned read, removing the lifetime > constraint and making it usable even on non-aligned byte slices. > > Reviewed-by: Alice Ryhl <alicer...@google.com> > Signed-off-by: Alexandre Courbot <acour...@nvidia.com> Reviewed-by: Benno Lossin <los...@kernel.org> --- Cheers, Benno > --- > rust/kernel/transmute.rs | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+)
