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Re: [Xen-devel] RFC: 32 bits as smallest atomic size.

On 26 Mar 2005, at 14:13, Jimi Xenidis wrote:

KF> We always naturally align fields, even in packed structs. The compiler
 KF> doesn't do it for us, but we check it manually.

hmm, is it padding you are trying to avoid?
Perhaps not using packed and adding the gcc option '-Wpadded' which
will automagically catch the offenders for you might be more

Depending on manually checking can result in performance and
correctness issues that are difficult to track.

Mostly it's used for structs that are part of the public Xen interface. I don't want different compilers packing fields in different ways.

 -- Keir

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