[SeaBIOS] Xen PV block device support in Seabios

Wei Liu wei.liu2 at citrix.com
Wed Mar 16 11:39:32 CET 2016


On Wed, Mar 16, 2016 at 11:33:02AM +0800, Shannon Zhao wrote:
> Hi,
> I noticed there are some efforts to add Xen PV block device support in
> Seabios in a GSoC project and there is a wiki page [1] for it. I found
> some patches [2] to add Xenstore R/W support for Seabios. But I didn't
> find the patches to add PV block device driver in Seabios.
> If you know please tell me where I can find these patches. And I noticed
> that the patches [2] and this GSoC project work didn't get applied to
> Seabios eventually, is there any reason? Does it mean that there are
> some difficulties to support Xen PV block device in Seabios?

On the wiki page there seems to be some clues on why it is not implemented --
there are issues with real mode. But then everything was way before my
formal involvement with Xen so I don't really know all the details.


> Thanks in advance!
> [1] http://wiki.xenproject.org/wiki/SeaBIOS
> [2] http://www.seabios.org/pipermail/seabios/2011-August/002214.html
> -- 
> Shannon

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