> > Is this patch of yours that neccessary? Could at least some of the
> > functions still exist?
>
> Well. This patch is manually doing what LTO would do automatically when
> it has a cross-translation-unit view of things, and come to the
> conclusion that in all cases, inlining cross-unit will make the calling
> code shorter, and allow the functions to be elided entirely.
>
> I take it from this that noone has tried livepatching an LTO build of Xen.
Roger did build it (FreeBSD uses it), but I don't think he tried
the test-cases.
Wait, I think he may have as his patch: f8c66c2ad2efdb281e4ebf15bf329d73c4f02ce7
Author: Roger Pau Monne <roger....@citrix.com>
Date: Tue May 3 12:55:09 2016 +0200
xen/xsplice: add ELFOSABI_FREEBSD as a supported OSABI for payloads
implies that he did build an payload (and I remember us trying to figure
out if the issues he had been hitting were due to LTO or something else).
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