Re: [Xen-devel] [PATCH] xen/common: Drop function calls for Xen compile/version information

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

> > 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.pau@xxxxxxxxxx>
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).


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