Re: ARM Primary FESCO discussion results, round 1

[Gordan Bobic <gordan@xxxxxxxxxx>]

Chris Tyler wrote:

> > Otherwise not paying attention to alignment in something like e2fsprogs 
> > could plausibly trash the file system:
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=680090
> >
> > Even if sloppy programming is not an issue on later ARMs, IMO the 
> > alignment issues should be treated as bugs at least until ARMv5 support 
> > is completely dropped.
>
> Alignment issues happen on x86 too, but we accept the cost of the
> hardware fixup and ignore them.

Only because they are "out of sight - out of mind" and most developers 
(myself included until relatively recently) don't know better. x86 
induced brain damage is not a good thing.

> Alignment issues are not necessarily
> bugs; sometimes they're the result of conscious decisions that the fixup
> is cheaper than the pages and pages of code required to avoid them in
> the first place (e.g., in streamed data).

FWIW, of all the alignment bugs I have observed in Fedora packages, 
precisely 0 were in streamed data. That leads me to think that most 
instances are oversights rather than conscious decisions.

> > > Anaconda isn't *quite* ready to go yet. And you don't actually gain much
> > > by using Anaconda for many devices- you still have to write an image to
> > > a removal storage device. Which you then run boot... and it writes a new
> > > image to a storage device. You've just made more work for yourself when
> > > you could have installed a working image directly.
> > In that case you might as well use the same installation procedure on 
> > x86, too - there's no reason not to.
>
> We do, after a fashion (and then wrap it in some extra layers): it's
> called a Live Disc :-)

Indeed, but that's not an "installation".

Gordan
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