Re: [PATCH 2.6.16-rc6] Promise SuperTrak driver

From: Arjan van de Ven
Date: Tue Mar 14 2006 - 04:37:40 EST


On Tue, 2006-03-14 at 04:27 -0500, Jeff Garzik wrote:
> Arjan van de Ven wrote:
> >>>>+struct st_sgitem {
> >>>>+struct st_sgtable {
> >>>>+struct handshake_frame {
> >>>>+struct req_msg {
> >>>>+struct status_msg {
> >>>
> >>>Has this all been tested on big-endian hardware?
> >>>
> >>
> >>No. It was only tested on i386 and x86-64 machines.
> >
> >
> > you'll want those to be __attribute__((packed)) as well btw
>
> I thought that was unnecessary if the struct members are ordered such
> that compiler would not add padding?

the rules for when padding gets added are different for each platform
though; worst case of adding it is that it serves as documentation that
the layout matters :)


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