@@ -4274,6 +4274,15 @@
# migration-safe, but allows tooling to get an insight and work with
# model details.
#
+# Note: When a non-migration-safe CPU model is expanded in static mode, some
+# features enabled by the CPU model may be omitted, because they can't be
+# implemented by a static CPU model definition (e.g. cache info passthrough and
+# PMU passthrough in x86). If you need an accurate representation of the
+# features enabled by a non-migration-safe CPU model, use @full. If you need a
+# static representation that will keep ABI compatibility even when changing QEMU
+# version or machine-type, use @static (but keep in mind that some features may
+# be omitted).
+#
# Since: 2.8.0
##
{ 'enum': 'CpuModelExpansionType',
Add a note warning that static expansion may not be 100% accurate when the CPU model is not migration-safe. This will be the case on x86 when expansing the "host" CPU model, because there are "host" features that can't have a migration-safe representation (e.g. "host-cache-info"). Message-Id: <20170116211124.29245-3-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> --- qapi-schema.json | 9 +++++++++ 1 file changed, 9 insertions(+)