Merge tag 'pull-request-2023-10-20' of https://gitlab.com/thuth/qemu into staging

* s390x CPU topology support
* Simplify the KVM register synchronization code
* Disable the analyze-migration.py test on s390x

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# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
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* tag 'pull-request-2023-10-20' of https://gitlab.com/thuth/qemu: (24 commits)
  tests/qtest/migration-test: Disable the analyze-migration.py test on s390x
  target/s390x/kvm: Simplify the GPRs, ACRs, CRs and prefix synchronization code
  target/s390x/kvm: Turn KVM_CAP_SYNC_REGS into a hard requirement
  tests/avocado: s390x cpu topology bad move
  tests/avocado: s390x cpu topology dedicated errors
  tests/avocado: s390x cpu topology test socket full
  tests/avocado: s390x cpu topology test dedicated CPU
  tests/avocado: s390x cpu topology entitlement tests
  tests/avocado: s390x cpu topology polarization
  tests/avocado: s390x cpu topology core
  docs/s390x/cpu topology: document s390x cpu topology
  qapi/s390x/cpu topology: add query-s390x-cpu-polarization command
  qapi/s390x/cpu topology: CPU_POLARIZATION_CHANGE QAPI event
  machine: adding s390 topology to info hotpluggable-cpus
  machine: adding s390 topology to query-cpu-fast
  qapi/s390x/cpu topology: set-cpu-topology qmp command
  target/s390x/cpu topology: activate CPU topology
  s390x/cpu topology: interception of PTF instruction
  s390x/cpu topology: resetting the Topology-Change-Report
  s390x/sclp: reporting the maximum nested topology entries
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

5 files changed, 207 insertions, 22 deletions

diff --git a/qapi/machine-common.json b/qapi/machine-common.json
new file mode 100644
index 0000000..fa6bd71
--- /dev/null
+++ b/qapi/machine-common.json
@@ -0,0 +1,21 @@
+# -*- Mode: Python -*-
+# vim: filetype=python
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or later.
+# See the COPYING file in the top-level directory.
+
+##
+# = Machines S390 data types
+##
+
+##
+# @CpuS390Entitlement:
+#
+# An enumeration of CPU entitlements that can be assumed by a virtual
+# S390 CPU
+#
+# Since: 8.2
+##
+{ 'enum': 'CpuS390Entitlement',
+  'prefix': 'S390_CPU_ENTITLEMENT',
+  'data': [ 'auto', 'low', 'medium', 'high' ] }
diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index f0a6b72..4e55adb 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -4,6 +4,8 @@
 # This work is licensed under the terms of the GNU GPL, version 2 or later.
 # See the COPYING file in the top-level directory.
 
+{ 'include': 'machine-common.json' }
+
 ##
 # @CpuModelInfo:
 #
@@ -361,3 +363,122 @@
                    'TARGET_MIPS',
                    'TARGET_LOONGARCH64',
                    'TARGET_RISCV' ] } }
+
+##
+# @CpuS390Polarization:
+#
+# An enumeration of CPU polarization that can be assumed by a virtual
+# S390 CPU
+#
+# Since: 8.2
+##
+{ 'enum': 'CpuS390Polarization',
+  'prefix': 'S390_CPU_POLARIZATION',
+  'data': [ 'horizontal', 'vertical' ],
+  'if': 'TARGET_S390X'
+}
+
+##
+# @set-cpu-topology:
+#
+# Modify the topology by moving the CPU inside the topology tree,
+# or by changing a modifier attribute of a CPU.
+# Absent values will not be modified.
+#
+# @core-id: the vCPU ID to be moved
+#
+# @socket-id: destination socket to move the vCPU to
+#
+# @book-id: destination book to move the vCPU to
+#
+# @drawer-id: destination drawer to move the vCPU to
+#
+# @entitlement: entitlement to set
+#
+# @dedicated: whether the provisioning of real to virtual CPU is dedicated
+#
+# Features:
+#
+# @unstable: This command is experimental.
+#
+# Returns: Nothing on success.
+#
+# Since: 8.2
+##
+{ 'command': 'set-cpu-topology',
+  'data': {
+      'core-id': 'uint16',
+      '*socket-id': 'uint16',
+      '*book-id': 'uint16',
+      '*drawer-id': 'uint16',
+      '*entitlement': 'CpuS390Entitlement',
+      '*dedicated': 'bool'
+  },
+  'features': [ 'unstable' ],
+  'if': { 'all': [ 'TARGET_S390X' , 'CONFIG_KVM' ] }
+}
+
+##
+# @CPU_POLARIZATION_CHANGE:
+#
+# Emitted when the guest asks to change the polarization.
+#
+# The guest can tell the host (via the PTF instruction) whether the
+# CPUs should be provisioned using horizontal or vertical polarization.
+#
+# On horizontal polarization the host is expected to provision all vCPUs
+# equally.
+#
+# On vertical polarization the host can provision each vCPU differently.
+# The guest will get information on the details of the provisioning
+# the next time it uses the STSI(15) instruction.
+#
+# @polarization: polarization specified by the guest
+#
+# Features:
+#
+# @unstable: This event is experimental.
+#
+# Since: 8.2
+#
+# Example:
+#
+# <- { "event": "CPU_POLARIZATION_CHANGE",
+#      "data": { "polarization": "horizontal" },
+#      "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
+##
+{ 'event': 'CPU_POLARIZATION_CHANGE',
+  'data': { 'polarization': 'CpuS390Polarization' },
+  'features': [ 'unstable' ],
+  'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
+}
+
+##
+# @CpuPolarizationInfo:
+#
+# The result of a CPU polarization query.
+#
+# @polarization: the CPU polarization
+#
+# Since: 8.2
+##
+{ 'struct': 'CpuPolarizationInfo',
+  'data': { 'polarization': 'CpuS390Polarization' },
+  'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
+}
+
+##
+# @query-s390x-cpu-polarization:
+#
+# Features:
+#
+# @unstable: This command is experimental.
+#
+# Returns: the machine's CPU polarization
+#
+# Since: 8.2
+##
+{ 'command': 'query-s390x-cpu-polarization', 'returns': 'CpuPolarizationInfo',
+  'features': [ 'unstable' ],
+  'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
+}
diff --git a/qapi/machine.json b/qapi/machine.json
index a08b657..6c9d2f6 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -9,6 +9,7 @@
 ##
 
 { 'include': 'common.json' }
+{ 'include': 'machine-common.json' }
 
 ##
 # @SysEmuTarget:
@@ -56,9 +57,16 @@
 #
 # @cpu-state: the virtual CPU's state
 #
+# @dedicated: the virtual CPU's dedication (since 8.2)
+#
+# @entitlement: the virtual CPU's entitlement (since 8.2)
+#
 # Since: 2.12
 ##
-{ 'struct': 'CpuInfoS390', 'data': { 'cpu-state': 'CpuS390State' } }
+{ 'struct': 'CpuInfoS390',
+  'data': { 'cpu-state': 'CpuS390State',
+            '*dedicated': 'bool',
+            '*entitlement': 'CpuS390Entitlement' } }
 
 ##
 # @CpuInfoFast:
@@ -71,8 +79,7 @@
 #
 # @thread-id: ID of the underlying host thread
 #
-# @props: properties describing to which node/socket/core/thread
-#     virtual CPU belongs to, provided if supported by board
+# @props: properties associated with a virtual CPU, e.g. the socket id
 #
 # @target: the QEMU system emulation target, which determines which
 #     additional fields will be listed (since 3.0)
@@ -899,29 +906,46 @@
 # should be passed by management with device_add command when a CPU is
 # being hotplugged.
 #
+# Which members are optional and which mandatory depends on the
+# architecture and board.
+#
+# For s390x see :ref:`cpu-topology-s390x`.
+#
+# The ids other than the node-id specify the position of the CPU
+# within the CPU topology (as defined by the machine property "smp",
+# thus see also type @SMPConfiguration)
+#
 # @node-id: NUMA node ID the CPU belongs to
 #
-# @socket-id: socket number within node/board the CPU belongs to
+# @drawer-id: drawer number within CPU topology the CPU belongs to
+#     (since 8.2)
 #
-# @die-id: die number within socket the CPU belongs to (since 4.1)
+# @book-id: book number within parent container the CPU belongs to
+#     (since 8.2)
 #
-# @cluster-id: cluster number within die the CPU belongs to (since
-#     7.1)
+# @socket-id: socket number within parent container the CPU belongs to
 #
-# @core-id: core number within cluster the CPU belongs to
+# @die-id: die number within the parent container the CPU belongs to
+#    (since 4.1)
 #
-# @thread-id: thread number within core the CPU belongs to
+# @cluster-id: cluster number within the parent container the CPU
+#     belongs to (since 7.1)
 #
-# Note: currently there are 6 properties that could be present but
-#     management should be prepared to pass through other properties
-#     with device_add command to allow for future interface extension.
-#     This also requires the filed names to be kept in sync with the
-#     properties passed to -device/device_add.
+# @core-id: core number within the parent container the CPU
+#     belongs to
+#
+# @thread-id: thread number within the core the CPU  belongs to
+#
+# Note: management should be prepared to pass through additional
+#     properties with device_add.
 #
 # Since: 2.7
 ##
 { 'struct': 'CpuInstanceProperties',
+  # Keep these in sync with the properties device_add accepts
   'data': { '*node-id': 'int',
+            '*drawer-id': 'int',
+            '*book-id': 'int',
             '*socket-id': 'int',
             '*die-id': 'int',
             '*cluster-id': 'int',
@@ -1478,26 +1502,43 @@
 # Schema for CPU topology configuration.  A missing value lets QEMU
 # figure out a suitable value based on the ones that are provided.
 #
-# @cpus: number of virtual CPUs in the virtual machine
-#
-# @sockets: number of sockets in the CPU topology
+# The members other than @cpus and @maxcpus define a topology of
+# containers.
 #
-# @dies: number of dies per socket in the CPU topology
+# The ordering from highest/coarsest to lowest/finest is:
+# @drawers, @books, @sockets, @dies, @clusters, @cores, @threads.
 #
-# @clusters: number of clusters per die in the CPU topology (since
-#     7.0)
+# Different architectures support different subsets of topology
+# containers.
 #
-# @cores: number of cores per cluster in the CPU topology
+# For example, s390x does not have clusters and dies, and the socket
+# is the parent container of cores.
 #
-# @threads: number of threads per core in the CPU topology
+# @cpus: number of virtual CPUs in the virtual machine
 #
 # @maxcpus: maximum number of hotpluggable virtual CPUs in the virtual
 #     machine
 #
+# @drawers: number of drawers in the CPU topology (since 8.2)
+#
+# @books: number of books in the CPU topology (since 8.2)
+#
+# @sockets: number of sockets per parent container
+#
+# @dies: number of dies per parent container
+#
+# @clusters: number of clusters per parent container (since 7.0)
+#
+# @cores: number of cores per parent container
+#
+# @threads: number of threads per core
+#
 # Since: 6.1
 ##
 { 'struct': 'SMPConfiguration', 'data': {
      '*cpus': 'int',
+     '*drawers': 'int',
+     '*books': 'int',
      '*sockets': 'int',
      '*dies': 'int',
      '*clusters': 'int',
diff --git a/qapi/meson.build b/qapi/meson.build
index 60a668b..f81a375 100644
--- a/qapi/meson.build
+++ b/qapi/meson.build
@@ -36,6 +36,7 @@ qapi_all_modules = [
   'error',
   'introspect',
   'job',
+  'machine-common',
   'machine',
   'machine-target',
   'migration',
diff --git a/qapi/qapi-schema.json b/qapi/qapi-schema.json
index 6594afb..c01ec33 100644
--- a/qapi/qapi-schema.json
+++ b/qapi/qapi-schema.json
@@ -66,6 +66,7 @@
 { 'include': 'introspect.json' }
 { 'include': 'qom.json' }
 { 'include': 'qdev.json' }
+{ 'include': 'machine-common.json' }
 { 'include': 'machine.json' }
 { 'include': 'machine-target.json' }
 { 'include': 'replay.json' }