Re: [PATCH v2] xen/block: Correctly define structures in publicheaders on ARM32 and ARM64

From: Konrad Rzeszutek Wilk
Date: Tue Dec 03 2013 - 13:12:53 EST


On Tue, Dec 03, 2013 at 05:03:10PM +0000, One Thousand Gnomes wrote:
> > itself. The protocol is defined by an entity which is external to Linux.
> > If this had been a bug in the IP protocol handling we would fix it and
> > move on. This case is no different IMHO.
>
> Actually that is quite untrue. We are *very* careful that we can talk to
> other internet nodes that speak broken versions of TCP. There have even
> been changes made to protocol definitions during initial research to
> avoid tripping bugs in existing implementations.
>
> > Once we set the ABI in stone then this is the sort of thing we will care
> > very much about (as we have done for many years on x86). Until then it
> > is not.
>
> Maybe Xen doesn't, but perhaps Linux doesn't wish to be tarred with the
> same brush. What Xen decides is the official protocol is Xen's decision.
> What a Linux guest does to keep compatibility ought to follow what Linux
> does as policy.

I believe that this patch does not alter the x86 protocols.
Only the ARM based ones which are still in Technical Preview.

>
> Alan
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