Merge tag 'accel-20250715' of https://github.com/philmd/qemu into staging

Accelerators patches

- Unify x86/arm hw/xen/arch_hvm.h header
- Move non-system-specific 'accel/accel-ops.h' and 'accel-cpu-ops.h' to accel/
- Move KVM definitions qapi/accelerator.json
- Add @qom-type field to CpuInfoFast QAPI structure
- Display CPU model name in 'info cpus' HMP command
- Introduce @x-accel-stats QMP command
- Add 'info accel' on HMP
- Improve qemu_add_vm_change_state_handler*() docstring
- Extract TCG statistic related code to tcg-stats.c
- Implement AccelClass::get_[vcpu]_stats() handlers for TCG and HVF
- Do not dump NaN in TCG statistics
- Revert incomplete "accel/tcg: Unregister the RCU before exiting RR thread"

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* tag 'accel-20250715' of https://github.com/philmd/qemu:
  system/runstate: Document qemu_add_vm_change_state_handler_prio* in hdr
  system/runstate: Document qemu_add_vm_change_state_handler()
  accel/hvf: Implement AccelClass::get_vcpu_stats() handler
  accel/tcg: Implement AccelClass::get_stats() handler
  accel/tcg: Propagate AccelState to dump_accel_info()
  accel/system: Add 'info accel' on human monitor
  accel/system: Introduce @x-accel-stats QMP command
  accel/tcg: Extract statistic related code to tcg-stats.c
  Revert "accel/tcg: Unregister the RCU before exiting RR thread"
  accel: Extract AccelClass definition to 'accel/accel-ops.h'
  accel: Rename 'system/accel-ops.h' -> 'accel/accel-cpu-ops.h'
  accel/tcg: Do not dump NaN statistics
  hw/core/machine: Display CPU model name in 'info cpus' command
  qapi/machine: Add @qom-type field to CpuInfoFast structure
  qapi/accel: Move definitions related to accelerators in their own file
  hw/arm/xen-pvh: Remove unnecessary 'hw/xen/arch_hvm.h' header
  hw/xen/arch_hvm: Unify x86 and ARM variants

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

Conflicts:
  qapi/machine.json
  Commit 0462da9d6b19 ("qapi: remove trivial "Returns:" sections")
  removed trivial "Returns:". This caused a conflict with the move from
  machine.json to accelerator.json.

4 files changed, 59 insertions, 27 deletions

diff --git a/qapi/accelerator.json b/qapi/accelerator.json
new file mode 100644
index 0000000000..28d5ff4c49
--- /dev/null
+++ b/qapi/accelerator.json
@@ -0,0 +1,54 @@
+# -*- Mode: Python -*-
+# vim: filetype=python
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+##
+# = Accelerators
+##
+
+{ 'include': 'common.json' }
+
+##
+# @KvmInfo:
+#
+# Information about support for KVM acceleration
+#
+# @enabled: true if KVM acceleration is active
+#
+# @present: true if KVM acceleration is built into this executable
+#
+# Since: 0.14
+##
+{ 'struct': 'KvmInfo', 'data': {'enabled': 'bool', 'present': 'bool'} }
+
+##
+# @query-kvm:
+#
+# Return information about KVM acceleration
+#
+# Since: 0.14
+#
+# .. qmp-example::
+#
+#     -> { "execute": "query-kvm" }
+#     <- { "return": { "enabled": true, "present": true } }
+##
+{ 'command': 'query-kvm', 'returns': 'KvmInfo' }
+
+##
+# @x-accel-stats:
+#
+# Query accelerator statistics
+#
+# Features:
+#
+# @unstable: This command is meant for debugging.
+#
+# Returns: accelerator statistics
+#
+# Since: 10.1
+##
+{ 'command': 'x-accel-stats',
+  'returns': 'HumanReadableText',
+  'features': [ 'unstable' ] }
diff --git a/qapi/machine.json b/qapi/machine.json
index f9bfda2151..6f59f70ca6 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -78,6 +78,8 @@
 #
 # @cpu-index: index of the virtual CPU
 #
+# @qom-type: QOM type name of the CPU (since 10.1)
+#
 # @qom-path: path to the CPU object in the QOM tree
 #
 # @thread-id: ID of the underlying host thread
@@ -91,6 +93,7 @@
 ##
 { 'union'         : 'CpuInfoFast',
   'base'          : { 'cpu-index'    : 'int',
+                      'qom-type'     : 'str',
                       'qom-path'     : 'str',
                       'thread-id'    : 'int',
                       '*props'       : 'CpuInstanceProperties',
@@ -444,33 +447,6 @@
 { 'command': 'inject-nmi' }
 
 ##
-# @KvmInfo:
-#
-# Information about support for KVM acceleration
-#
-# @enabled: true if KVM acceleration is active
-#
-# @present: true if KVM acceleration is built into this executable
-#
-# Since: 0.14
-##
-{ 'struct': 'KvmInfo', 'data': {'enabled': 'bool', 'present': 'bool'} }
-
-##
-# @query-kvm:
-#
-# Return information about KVM acceleration
-#
-# Since: 0.14
-#
-# .. qmp-example::
-#
-#     -> { "execute": "query-kvm" }
-#     <- { "return": { "enabled": true, "present": true } }
-##
-{ 'command': 'query-kvm', 'returns': 'KvmInfo' }
-
-##
 # @NumaOptionsType:
 #
 # @node: NUMA nodes configuration
diff --git a/qapi/meson.build b/qapi/meson.build
index 3b035aea33..ca6b61a608 100644
--- a/qapi/meson.build
+++ b/qapi/meson.build
@@ -57,6 +57,7 @@ qapi_all_modules = [
 ]
 if have_system
   qapi_all_modules += [
+    'accelerator',
     'acpi',
     'audio',
     'cryptodev',
diff --git a/qapi/qapi-schema.json b/qapi/qapi-schema.json
index 49b9a0267d..82f111ba06 100644
--- a/qapi/qapi-schema.json
+++ b/qapi/qapi-schema.json
@@ -39,6 +39,7 @@
 { 'include': 'run-state.json' }
 { 'include': 'crypto.json' }
 { 'include': 'job.json' }
+{ 'include': 'accelerator.json' }
 { 'include': 'block.json' }
 { 'include': 'block-export.json' }
 { 'include': 'char.json' }