Hi,
I was trying to work out why this would cause my Windows 10 guest to hang
when it should have been equivalent to ['defaults'] or 1.
viridian = ['base', 'freq', 'apic_assist', 'crash_ctl', 'no_vp_limit',
'cpu_hotplug', 'time_ref_count', 'stimer']
Checking the libxl sources show that in fact the defaults are:
if (libxl_defbool_val(info->u.hvm.viridian)) {
/* Enable defaults */
libxl_bitmap_set(&enlightenments, LIBXL_VIRIDIAN_ENLIGHTENMENT_BASE);
libxl_bitmap_set(&enlightenments, LIBXL_VIRIDIAN_ENLIGHTENMENT_FREQ);
libxl_bitmap_set(&enlightenments,
LIBXL_VIRIDIAN_ENLIGHTENMENT_TIME_REF_COUNT);
libxl_bitmap_set(&enlightenments,
LIBXL_VIRIDIAN_ENLIGHTENMENT_APIC_ASSIST);
libxl_bitmap_set(&enlightenments,
LIBXL_VIRIDIAN_ENLIGHTENMENT_CRASH_CTL);
libxl_bitmap_set(&enlightenments,
LIBXL_VIRIDIAN_ENLIGHTENMENT_NO_VP_LIMIT);
libxl_bitmap_set(&enlightenments,
LIBXL_VIRIDIAN_ENLIGHTENMENT_CPU_HOTPLUG);
}
LIBXL_VIRIDIAN_ENLIGHTENMENT_STIMER was removed as a default enlightement in
e83077a3d11072708a5c38fa09fa9d011914e2a1 but the docs were not kept aligned.
Thanks,
James
commit af3b374637bae4b30091f731f2bfeea4460478da
Author: James Dingwall <[email protected]>
Date: Fri Nov 7 19:09:56 2025 +0000
doc/man: align list of viridian default enlightenments with libxl
The stimer enlightment was removed from the defaults list in
e83077a3d11072708a5c38fa09fa9d011914e2a1 but the corresponding docs
change was not made. Removing from docs as enabling the enlightenment
will hang Windows 10 guests.
Signed-off-by: James Dingwall <[email protected]>
diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in
index ad1553c5e9..27c455210b 100644
--- a/docs/man/xl.cfg.5.pod.in
+++ b/docs/man/xl.cfg.5.pod.in
@@ -2503,7 +2503,7 @@ guests effectively allowing vCPU hotplug.
This is a special value that enables the default set of groups, which
is currently the B<base>, B<freq>, B<time_ref_count>, B<apic_assist>,
-B<crash_ctl>, B<stimer>, B<no_vp_limit> and B<cpu_hotplug> groups.
+B<crash_ctl>, B<no_vp_limit> and B<cpu_hotplug> groups.
=item B<all>
