Update virtio network driver

[Pavel Pisa]

Hello Jin-Hyun,

On Tuesday 15 of November 2016 11:29:05 Pavel Pisa wrote:
> Hello Jin-Hyun,
>
> thanks for update.
>
> I have returned from my USA holydays now and catching up
> with e-mails and work backlogs.
>
> On Thursday 10 of November 2016 10:42:34 Jinhyun wrote:
> > Hi, all!
> >
> > We removed our RTEMS-virtio driver's dependencies on architecture. We
> > used built-in function of gcc, __sync_synchronize(). This function
> > generates proper memory barrier for target architecture on compile time.
> > In addition, we replaced pcib_conf_read/write functions to
> > pci_read/write_config functions. We added several lines of codes for
> > exception handling suggested by Pavel Pisa. Thank you, Pavel Pisa. As we
> > removed dependencies on CPU architectures, we moved the virtio source
> > directory located at
> > c/src/lib/libbsp/i386/pc386/ to c/src/lib/libbsp/shared.
>
> I have done some updates and testing of your work some time ago.
> I think I reported that but I am not 100% sure. Please,
> look if some changes in my WIP branch are of some use for you

OK, I see that it is integrated.

Great.

Pavel