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The functions `[Pin]Init::__[pinned_]init` and `ptr::write` called from the `init!` macro require the passed pointer to be aligned. This fact is ensured by the creation of field accessors to previously initialized fields. Since we missed this very important fact from the beginning [1], document it in the code. Link: https://rust-for-linux.zulipchat.com/#narrow/channel/561532-pin-init/topic/initialized.20field.20accessor.20detection/with/576210658 [1] Fixes:90e53c5e70("rust: add pin-init API core") Cc: <stable@vger.kernel.org> # 6.6.y, 6.12.y:42415d163e: rust: pin-init: add references to previously initialized fields Cc: <stable@vger.kernel.org> # 6.6.y, 6.12.y, 6.18.y, 6.19.y Signed-off-by: Benno Lossin <lossin@kernel.org> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260302140424.4097655-2-lossin@kernel.org [ Updated Cc: stable@ tags as discussed. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>