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no-senders; approved; loop; banned-address; header-match-devel.lists.libvirt.org-0; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Jiri Denemark via Devel Reply-To: Jiri Denemark X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1782897746457158500 Content-Type: text/plain; charset="utf-8" From: Jiri Denemark Signed-off-by: Jiri Denemark Reviewed-by: Peter Krempa --- 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. =20 + * Introduce VIR_CONNECT_GET_DOMAIN_CAPABILITIES_SUPPORTED_CPU_FEATURES f= lag + + Some CPU features may be enabled explicitly, but should not automatica= lly + become part of a host-model CPU and thus are not normally visible in d= omain + capabilities. Users can now request such features to be shown in the + host-model CPU in domain capabilities using the new flag. It is expose= d as + ``--supported-cpu-features`` option for ``virsh domcapabilities``. + * **Bug fixes** =20 * 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. =20 + * 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 exampl= e, + 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. + =20 v12.4.0 (2026-06-01) =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --=20 2.54.0