Merge tag 'pull-10.1-maintainer-june-2025-020725-1' of https://gitlab.com/stsquad/qemu into staging

Maintainer updates for June (gitlab, semihosting, plugins, virtio-gpu)

 - mark s390x runner system tests as allow_fail
 - build semihosting once
 - add register write support to plugins
 - add virtual memory write support to plugins
 - add harder memory read/write support to plugins
 - add patcher plugin and tests
 - re-stock virtio-gpu MAINTAINERS
 - fix context init for Venus fences

* tag 'pull-10.1-maintainer-june-2025-020725-1' of https://gitlab.com/stsquad/qemu:
  virtio-gpu: support context init multiple timeline
  MAINTAINERS: add Akihiko and Dmitry as reviewers
  MAINTAINERS: add myself to virtio-gpu for Odd Fixes
  plugins: Update plugin version and add notes
  plugins: Add patcher plugin and test
  tests/tcg: Remove copy-pasted notes and from i386 and add x86_64 system tests to tests
  plugins: Add memory hardware address read/write API
  plugins: Add memory virtual address write API
  plugins: Add enforcement of QEMU_PLUGIN_CB flags in register R/W callbacks
  plugins: Add register write API
  gdbstub: Expose gdb_write_register function to consumers of gdbstub
  semihosting/uaccess: Compile once
  semihosting/uaccess: Remove uses of target_ulong type
  tests/functional: Add PCI hotplug test for aarch64
  gitlab: mark s390x-system to allow failures

Conflicts:
  tests/functional/meson.build

  Context conflict with commit 7bc86ccbb59f ("tests/functional: test
  device passthrough on aarch64"), keep both changes to
  tests_aarch64_system_thorough[].

1 files changed, 72 insertions, 0 deletions

diff --git a/tests/functional/test_aarch64_hotplug_pci.py b/tests/functional/test_aarch64_hotplug_pci.py
new file mode 100755
index 0000000000..c9bb7f1d97
--- /dev/null
+++ b/tests/functional/test_aarch64_hotplug_pci.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+#
+# The test hotplugs a PCI device and checks it on a Linux guest.
+#
+# Copyright (c) 2025 Linaro Ltd.
+#
+# Author:
+#  Gustavo Romero <gustavo.romero@linaro.org>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern
+from qemu_test import BUILD_DIR
+
+class HotplugPCI(LinuxKernelTest):
+
+    ASSET_KERNEL = Asset(
+        ('https://ftp.debian.org/debian/dists/stable/main/installer-arm64/'
+         '20230607+deb12u11/images/netboot/debian-installer/arm64/linux'),
+         'd92a60392ce1e379ca198a1a820899f8f0d39a62d047c41ab79492f81541a9d9')
+
+    ASSET_INITRD = Asset(
+        ('https://ftp.debian.org/debian/dists/stable/main/installer-arm64/'
+         '20230607+deb12u11/images/netboot/debian-installer/arm64/initrd.gz'),
+         '9f817f76951f3237bca8216bee35267bfb826815687f4b2fcdd5e6c2a917790c')
+
+    def test_hotplug_pci(self):
+
+        self.set_machine('virt')
+
+        self.vm.add_args('-m', '512M',
+                         '-cpu', 'cortex-a57',
+                         '-append',
+                         'console=ttyAMA0,115200 init=/bin/sh',
+                         '-device',
+                         'pcie-root-port,bus=pcie.0,chassis=1,slot=1,id=pcie.1',
+                         '-bios',
+                         self.build_file('pc-bios', 'edk2-aarch64-code.fd'))
+
+        # BusyBox prompt
+        prompt = "~ #"
+        self.launch_kernel(self.ASSET_KERNEL.fetch(),
+                           self.ASSET_INITRD.fetch(),
+                           wait_for=prompt)
+
+        # Check for initial state: 2 network adapters, lo and enp0s1.
+        exec_command_and_wait_for_pattern(self,
+                                          'ls /sys/class/net | wc -l',
+                                          '2')
+
+        # Hotplug one network adapter to the root port, i.e. pcie.1 bus.
+        self.vm.cmd('device_add',
+                    driver='virtio-net-pci',
+                    bus='pcie.1',
+                    addr=0,
+                    id='na')
+        # Wait for the kernel to recognize the new device.
+        self.wait_for_console_pattern('virtio-pci')
+        self.wait_for_console_pattern('virtio_net')
+
+        # Check if there is a new network adapter.
+        exec_command_and_wait_for_pattern(self,
+                                          'ls /sys/class/net | wc -l',
+                                          '3')
+
+        self.vm.cmd('device_del', id='na')
+        exec_command_and_wait_for_pattern(self,
+                                          'ls /sys/class/net | wc -l',
+                                          '2')
+
+if __name__ == '__main__':
+    LinuxKernelTest.main()