On Tue, 2020-05-26 at 20:01 +0300, Paraschiv, Andra-Irina wrote: > > On 26/05/2020 09:44, Greg KH wrote: > > On Tue, May 26, 2020 at 01:13:18AM +0300, Andra Paraschiv wrote: > > > +struct enclave_get_slot_req { > > > + /* Context ID (CID) for the enclave vsock device. */ > > > + u64 enclave_cid; > > > +} __attribute__ ((__packed__)); > > > > Can you really "pack" a single member structure? > > > > Anyway, we have better ways to specify this instead of the "raw" > > __attribute__ option. But first see if you really need any of > > these, at > > first glance, I do not think you do at all, and they can all be > > removed. > > There are a couple of data structures with more than one member and > multiple field sizes. And for the ones that are not, gathered as > feedback from previous rounds of review that should consider adding > a > "flags" field in there for further extensibility. > > I can modify to have "__packed" instead of the attribute callout. I tend to prefer designing the protocol so that all the fields are naturally aligned, which should avoid the need for the attribute. Is it possible in this case ? Cheers, Ben.