From: Jiri Denemark <[email protected]>
Signed-off-by: Jiri Denemark <[email protected]>
---
NEWS.rst | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/NEWS.rst b/NEWS.rst
index 07f539f996..53c2c205a3 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -54,6 +54,14 @@ v12.5.0 (2026-07-01)
specifying additional arguments to it, via ``argv``
attribute.
+ * Introduce VIR_CONNECT_GET_DOMAIN_CAPABILITIES_SUPPORTED_CPU_FEATURES flag
+
+ Some CPU features may be enabled explicitly, but should not automatically
+ become part of a host-model CPU and thus are not normally visible in domain
+ capabilities. Users can now request such features to be shown in the
+ host-model CPU in domain capabilities using the new flag. It is exposed as
+ ``--supported-cpu-features`` option for ``virsh domcapabilities``.
+
* **Bug fixes**
* Ensure proper shutdown ordering of ``virtlogd`` and ``virtlockd``
@@ -78,6 +86,18 @@ v12.5.0 (2026-07-01)
not properly initializing an agent to crashing when the agent
socket cannot be opened.
+ * Fix domain capabilities on AMD CPUs
+
+ QEMU 10.1 and newer does not automatically enable features from
+ arch-capabilities MSR on AMD CPUs as they are specific for Intel CPUs and
+ KVM is just emulating them on AMD. But advertising them on AMD CPUs can
+ cause Windows guest OS to crash so they are hidden by default now. But the
+ features are still supported and can be enabled explicitly, for example,
+ when migrating existing domains. Libvirt now detects this scenario and
+ properly shows the affected features as enabled in domain capabilities when
+ requested by VIR_CONNECT_GET_DOMAIN_CAPABILITIES_SUPPORTED_CPU_FEATURES
+ flag.
+
v12.4.0 (2026-06-01)
====================
--
2.54.0
