From: Markus Armbruster <armbru@redhat.com>
To: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Cc: qemu-devel@nongnu.org, qemu-s390x@nongnu.org,
"Eduardo Habkost" <eduardo@habkost.net>,
"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"David Hildenbrand" <david@redhat.com>,
"Halil Pasic" <pasic@linux.ibm.com>,
"Christian Borntraeger" <borntraeger@linux.ibm.com>,
"Eric Farman" <farman@linux.ibm.com>,
"Thomas Huth" <thuth@redhat.com>,
"Eric Blake" <eblake@redhat.com>,
"Michael Roth" <michael.roth@amd.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Yanan Wang" <wangyanan55@huawei.com>,
"Daniel P. Berrangé" <berrange@redhat.com>,
"Ilya Leoshkevich" <iii@linux.ibm.com>,
"Cleber Rosa" <crosa@redhat.com>,
"Wainer dos Santos Moschetta" <wainersm@redhat.com>,
"Beraldo Leal" <bleal@redhat.com>,
"Pierre Morel" <pmorel@linux.ibm.com>
Subject: Re: [PATCH v26 09/21] qapi/s390x/cpu topology: set-cpu-topology qmp command
Date: Tue, 17 Oct 2023 13:01:40 +0200 [thread overview]
Message-ID: <878r81a4x7.fsf@pond.sub.org> (raw)
In-Reply-To: <20231016183925.2384704-10-nsg@linux.ibm.com> (Nina Schoetterl-Glausch's message of "Mon, 16 Oct 2023 20:39:13 +0200")
Nina Schoetterl-Glausch <nsg@linux.ibm.com> writes:
> From: Pierre Morel <pmorel@linux.ibm.com>
>
> The modification of the CPU attributes are done through a monitor
> command.
>
> It allows to move the core inside the topology tree to optimize
> the cache usage in the case the host's hypervisor previously
> moved the CPU.
>
> The same command allows to modify the CPU attributes modifiers
> like polarization entitlement and the dedicated attribute to notify
> the guest if the host admin modified scheduling or dedication of a vCPU.
>
> With this knowledge the guest has the possibility to optimize the
> usage of the vCPUs.
>
> The command has a feature unstable for the moment.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
> Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
QAPI schema
Acked-by: Markus Armbruster <armbru@redhat.com>
next prev parent reply other threads:[~2023-10-17 11:02 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-16 18:39 [PATCH v26 00/21] s390x: CPU Topology Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 01/21] qapi: machine.json: change docs regarding CPU topology Nina Schoetterl-Glausch
2023-10-17 9:40 ` Markus Armbruster
2023-10-17 11:10 ` Thomas Huth
2023-10-19 9:57 ` Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 02/21] CPU topology: extend with s390 specifics Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 03/21] s390x/cpu topology: add topology entries on CPU hotplug Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 04/21] target/s390x/cpu topology: handle STSI(15) and build the SYSIB Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 05/21] s390x/sclp: reporting the maximum nested topology entries Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 06/21] s390x/cpu topology: resetting the Topology-Change-Report Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 07/21] s390x/cpu topology: interception of PTF instruction Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 08/21] target/s390x/cpu topology: activate CPU topology Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 09/21] qapi/s390x/cpu topology: set-cpu-topology qmp command Nina Schoetterl-Glausch
2023-10-17 11:01 ` Markus Armbruster [this message]
2023-10-16 18:39 ` [PATCH v26 10/21] machine: adding s390 topology to query-cpu-fast Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 11/21] machine: adding s390 topology to info hotpluggable-cpus Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 12/21] qapi/s390x/cpu topology: CPU_POLARIZATION_CHANGE QAPI event Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 13/21] qapi/s390x/cpu topology: add query-s390x-cpu-polarization command Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 14/21] docs/s390x/cpu topology: document s390x cpu topology Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 15/21] tests/avocado: s390x cpu topology core Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 16/21] tests/avocado: s390x cpu topology polarization Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 17/21] tests/avocado: s390x cpu topology entitlement tests Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 18/21] tests/avocado: s390x cpu topology test dedicated CPU Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 19/21] tests/avocado: s390x cpu topology test socket full Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 20/21] tests/avocado: s390x cpu topology dedicated errors Nina Schoetterl-Glausch
2023-10-16 18:39 ` [PATCH v26 21/21] tests/avocado: s390x cpu topology bad move Nina Schoetterl-Glausch
2023-10-17 11:16 ` [PATCH v26 00/21] s390x: CPU Topology Markus Armbruster
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