[U-Boot] [PATCH 0/5] Create an API for safely accessing BMP header fields

[Tom Rini]

On Mon, Feb 04, 2013 at 03:19:56PM +0100, Albert ARIBAUD wrote:
> Hi Nikita,
> 
> On Mon, 04 Feb 2013 14:37:06 +0200, Nikita Kiryanov
> <nikita at compulab.co.il> wrote:
> 
> > Hi Albert,
> > 
> > On 02/04/2013 01:57 PM, Albert ARIBAUD wrote:
> > >
> > > IIRC, you has submitted a fix so that BMP loads would result in
> > > correctly aligned fields and thus no need for accessors. Why this
> > > change of mind?
> >  >
> > 
> > I did mention that I consider that fix as temporary. I believe this fix
> > is better because it addresses the issue everywhere and does so in a
> > more maintainable way (does not require the address fix to be duplicated
> > everywhere there is a problem).
> 
> I actually like the new fix less, as it adds an API where there is no
> need of one -- it's not like the implementation of BMP is at risk of
> changing. What is the problem in fixing the load address at load time
> and then passing this fixed address around?

OK, so I'm wondering.  Isn't this an example of where our idea that
unaligned accesses are a software problem to fix, rather than an area to
let the hardware fixup for us, when able, is wrong?

In other words, a real life example of why we should go with
-munaligned-access being set for v7, set the HW bit and let things go?

-- 
Tom
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