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SubjectRe: various vmbus review comments
On Mon, May 09, 2011 at 01:46:56AM +0000, KY Srinivasan wrote:
> > - the instances of hv_driver structures need to be static and
> > not programatically defined, like all other USB and PCI
> > drivers are handled.
> Done. You had expressed some concern that this would expose some issue
> with the core vmbus driver (which is what I want to concentrate on this
> go around). I have done this for both the block driver and the mouse driver
> and I am pretty sure I can do the same with the network driver. I have not
> currently done this for the network driver, since the number of patches I have
> to submit is already very large.

Ok, but it shouldn't be a major change to the code, right?

> > - module reference counting. Are you sure you got it all right
> > for the individual modules that attach to the bus? I don't
> > see any reference counting happening, is that correct?
> I have already exchanged an email with you on this. To summarize, it
> does not look like there is a problem
> > - fix the sparse warnings.
> Mostly done; most of the errors are in the base kernel coming out of
> the macro page_to_pfn()
> > - fix the use of volatile in the ring buffer code. It should
> > not be needed and if you are relying on it, then the code is
> > wrong.
> You are right; all accesses were already serialized with a spin lock and the
> Volatile attribute was unnecessary.
> > - fix the namespace on the ringbuffer code to show that it
> > really is only for the hyperv bus code internally.
> Done.
> >
> > That should be enough for at least one more set of patches for you all
> > to work on :)
> Greg,
> I have had so much fun cleaning up these drivers that I lost track of the patch count.
> I have addressed all the issues you have raised in addition to some other cleanup
> that I was doing since about a week. As I look at the patch-set, I have little over
> 200 patches. If it is ok with you, I would like to send them as a single set. Let me know
> what you prefer. I need to circulate these patches internally before I can send them out.
> I should be able to send these out early next week.

A single set is fine, if that's what you want to do, I can handle that
amount as long as they all build all along the way and don't break


greg k-h

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