Re: [Xen-devel] [PATCH OSSTEST v3 21/22] Debian: Arrange to be able to chainload a xen.efi from grub2

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-06-25 at 11:33 +0100, Ian Jackson wrote:
> Ian Campbell writes ("[PATCH OSSTEST v3 21/22] Debian: Arrange to be able to 
> chainload a xen.efi from grub2"):
> > Note that the 20_linux_xen change here is a bit specific to us and not
> > really generic enough to go upstream IMHO, hence I haven't.
> 
> So if we accept this patch, we are committing to always having
> 20_linux_xen (and perhaps updating it to cope with new versions of
> grub).  Originally having this file in osstest was intended as a
> stopgap, pending inclusion of a suitable file upstream.

I originally considered writing NN_osstest_uefi, but it looked like it
was going to involve copying a fair bit of boilerplate from
20_linux_xen.

However, I've changed the approach I was using since then and now I
suspect there wouldn't actually be much duplication. So unless you think
otherwise I'll try that for next time around.

> Is there some upstream-friendly way of achieving the same thing ?

Not AFAIK. I could try upstreaming this but given that a) the user still
needs to manually copy things to the ESP and create a suitable xen.cfg
and b) people are working on a better way which will just work with the
existing non-UEFI grub.cfg file entries, I'm not sure how much point
there is.

> I'm not really sure what is `specific to us' (or what `us' here means
> - osstest, or Xen on arm64, or ...?)

All the paths are basically specific to us, just the general shape of
the entry is more generically applicable.

http://wiki.xen.org/wiki/Xen_EFI already documents how to do things
FWIW.

Ian.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel