Merge tag 'pull-target-arm-20250830' of https://gitlab.com/pm215/qemu into staging

target-arm queue:
 * Implement FEAT_SCTLR2
 * Implement FEAT_TCR2
 * Implement FEAT_CSSC
 * Implement FEAT_LSE128
 * Clean up of register field definitions
 * Trap PMCR when MDCR_EL2.TPMCR is set
 * tests/functional: update aarch64 RME test images
 * hw/intc/arm_gicv3_kvm: preserve pending interrupts during cpr
 * hw/arm: add static NVDIMMs in device tree
 * hw/arm/stm32f205_soc: Don't leak TYPE_OR_IRQ objects
 * scripts/kernel-doc: Avoid new Perl precedence warning
 * scripts/kernel-doc: Update to kernel's new Python implementation

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# gpg: Signature made Sun 31 Aug 2025 02:07:28 AM AEST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [unknown]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [unknown]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [unknown]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20250830' of https://gitlab.com/pm215/qemu: (32 commits)
  hw/arm/stm32f205_soc: Don't leak TYPE_OR_IRQ objects
  target/arm: Enable FEAT_LSE128 for -cpu max
  target/arm: Implement FEAT_LSE128
  target/arm: Rename isar_feature_aa64_atomics
  tcg: Add tcg_gen_atomic_{xchg,fetch_and,fetch_or}_i128
  accel/tcg: Add cpu_atomic_*_mmu for 16-byte xchg, fetch_and, fetch_or
  qemu/atomic: Add atomic16 primitives for xchg, fetch_and, fetch_or
  qemu/atomic: Finish renaming atomic128-cas.h headers
  target/arm: Correct condition of aa64_atomics feature function
  MAINTAINERS: Put kernel-doc under the "docs build machinery" section
  scripts/kernel-doc: Delete the old Perl kernel-doc script
  scripts/kerneldoc: Switch to the Python kernel-doc script
  scripts/kernel-doc: tweak for QEMU coding standards
  scripts/kernel-doc: strip QEMU_ from function definitions
  scripts: Import Python kerneldoc from Linux kernel
  tests/qtest/libqtest.h: Remove stray space from doc comment
  docs/sphinx/kerneldoc.py: Handle new LINENO syntax
  scripts/kernel-doc: Avoid new Perl precedence warning
  hw/arm: add static NVDIMMs in device tree
  target/arm: Enable FEAT_CSSC for -cpu max
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

4 files changed, 81 insertions, 97 deletions

diff --git a/tests/functional/aarch64/test_device_passthrough.py b/tests/functional/aarch64/test_device_passthrough.py
index 1f3f158..1743778 100755
--- a/tests/functional/aarch64/test_device_passthrough.py
+++ b/tests/functional/aarch64/test_device_passthrough.py
@@ -9,7 +9,7 @@
 #
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-import os
+from os.path import join
 
 from qemu_test import QemuSystemTest, Asset
 from qemu_test import exec_command, wait_for_console_pattern
@@ -77,15 +77,16 @@ echo device_passthrough_test_ok
 
 class Aarch64DevicePassthrough(QemuSystemTest):
 
-    # https://github.com/pbo-linaro/qemu-linux-stack
+    # https://github.com/pbo-linaro/qemu-linux-stack/tree/device_passthrough
+    # $ ./build.sh && ./archive_artifacts.sh out.tar.xz
     #
     # Linux kernel is compiled with defconfig +
     # IOMMUFD + VFIO_DEVICE_CDEV + ARM_SMMU_V3_IOMMUFD
     # https://docs.kernel.org/driver-api/vfio.html#vfio-device-cde
     ASSET_DEVICE_PASSTHROUGH_STACK = Asset(
-        ('https://fileserver.linaro.org/s/fx5DXxBYme8dw2G/'
-         'download/device_passthrough.tar.xz'),
-         '812750b664d61c2986f2b149939ae28cafbd60d53e9c7e4b16e97143845e196d')
+        ('https://github.com/pbo-linaro/qemu-linux-stack/'
+         'releases/download/build/device_passthrough-c3fb84a.tar.xz'),
+         '15ac2b02bed0c0ea8e3e007de0bcfdaf6fd51c1ba98213f841dc7d01d6f72f04')
 
     # This tests the device passthrough implementation, by booting a VM
     # supporting it with two nvme disks attached, and launching a nested VM
@@ -96,16 +97,16 @@ class Aarch64DevicePassthrough(QemuSystemTest):
 
         self.vm.set_console()
 
-        stack_path_tar_gz = self.ASSET_DEVICE_PASSTHROUGH_STACK.fetch()
-        self.archive_extract(stack_path_tar_gz, format="tar")
+        stack_path_tar = self.ASSET_DEVICE_PASSTHROUGH_STACK.fetch()
+        self.archive_extract(stack_path_tar, format="tar")
 
         stack = self.scratch_file('out')
-        kernel = os.path.join(stack, 'Image.gz')
-        rootfs_host = os.path.join(stack, 'host.ext4')
-        disk_vfio = os.path.join(stack, 'disk_vfio')
-        disk_iommufd = os.path.join(stack, 'disk_iommufd')
-        guest_cmd = os.path.join(stack, 'guest.sh')
-        nested_guest_cmd = os.path.join(stack, 'nested_guest.sh')
+        kernel = join(stack, 'Image.gz')
+        rootfs_host = join(stack, 'host.ext4')
+        disk_vfio = join(stack, 'disk_vfio')
+        disk_iommufd = join(stack, 'disk_iommufd')
+        guest_cmd = join(stack, 'guest.sh')
+        nested_guest_cmd = join(stack, 'nested_guest.sh')
         # we generate two random disks
         with open(disk_vfio, "wb") as d: d.write(randbytes(512))
         with open(disk_iommufd, "wb") as d: d.write(randbytes(1024))
diff --git a/tests/functional/aarch64/test_rme_sbsaref.py b/tests/functional/aarch64/test_rme_sbsaref.py
index 100f1c7..ca892e0 100755
--- a/tests/functional/aarch64/test_rme_sbsaref.py
+++ b/tests/functional/aarch64/test_rme_sbsaref.py
@@ -10,21 +10,23 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
 import os
+from os.path import join
+import shutil
 
 from qemu_test import QemuSystemTest, Asset, wait_for_console_pattern
 from qemu_test import exec_command_and_wait_for_pattern
-from test_rme_virt import test_realms_guest
 
 
 class Aarch64RMESbsaRefMachine(QemuSystemTest):
 
-    # Stack is built with OP-TEE build environment from those instructions:
+    # Stack is inspired from:
     # https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/
-    # https://github.com/pbo-linaro/qemu-rme-stack
+    # https://github.com/pbo-linaro/qemu-linux-stack/tree/rme_sbsa_release
+    # ./build.sh && ./archive_artifacts.sh out.tar.xz
     ASSET_RME_STACK_SBSA = Asset(
-        ('https://fileserver.linaro.org/s/KJyeBxL82mz2r7F/'
-         'download/rme-stack-op-tee-4.2.0-cca-v4-sbsa.tar.gz'),
-         'dd9ab28ec869bdf3b5376116cb3689103b43433fd5c4bca0f4a8d8b3c104999e')
+        ('https://github.com/pbo-linaro/qemu-linux-stack/'
+         'releases/download/build/rme_sbsa_release-a7f02cf.tar.xz'),
+         '27d8400b11befb828d6db0cab97e7ae102d0992c928d3dfbf38b24b6cf6c324c')
 
     # This tests the FEAT_RME cpu implementation, by booting a VM supporting it,
     # and launching a nested VM using it.
@@ -35,35 +37,41 @@ class Aarch64RMESbsaRefMachine(QemuSystemTest):
 
         self.vm.set_console()
 
-        stack_path_tar_gz = self.ASSET_RME_STACK_SBSA.fetch()
-        self.archive_extract(stack_path_tar_gz, format="tar")
+        stack_path_tar = self.ASSET_RME_STACK_SBSA.fetch()
+        self.archive_extract(stack_path_tar, format="tar")
 
-        rme_stack = self.scratch_file('rme-stack-op-tee-4.2.0-cca-v4-sbsa')
-        pflash0 = os.path.join(rme_stack, 'images', 'SBSA_FLASH0.fd')
-        pflash1 = os.path.join(rme_stack, 'images', 'SBSA_FLASH1.fd')
-        virtual = os.path.join(rme_stack, 'images', 'disks', 'virtual')
-        drive = os.path.join(rme_stack, 'out-br', 'images', 'rootfs.ext4')
+        rme_stack = self.scratch_file('.')
+        pflash0 = join(rme_stack, 'out', 'SBSA_FLASH0.fd')
+        pflash1 = join(rme_stack, 'out', 'SBSA_FLASH1.fd')
+        rootfs = join(rme_stack, 'out', 'host.ext4')
 
-        self.vm.add_args('-cpu', 'max,x-rme=on,pauth-impdef=on')
+        efi = join(rme_stack, 'out', 'EFI')
+        os.makedirs(efi, exist_ok=True)
+        shutil.copyfile(join(rme_stack, 'out', 'Image'), join(efi, 'Image'))
+        with open(join(efi, 'startup.nsh'), 'w') as startup:
+            startup.write('fs0:Image nokaslr root=/dev/vda rw init=/init --'
+                          ' /host/out/lkvm run --realm'
+                          ' -m 256m'
+                          ' --restricted_mem'
+                          ' --kernel /host/out/Image'
+                          ' --disk /host/out/guest.ext4'
+                          ' --params "root=/dev/vda rw init=/init"')
+
+        self.vm.add_args('-cpu', 'max,x-rme=on')
+        self.vm.add_args('-smp', '2')
         self.vm.add_args('-m', '2G')
         self.vm.add_args('-M', 'sbsa-ref')
         self.vm.add_args('-drive', f'file={pflash0},format=raw,if=pflash')
         self.vm.add_args('-drive', f'file={pflash1},format=raw,if=pflash')
-        self.vm.add_args('-drive', f'file=fat:rw:{virtual},format=raw')
-        self.vm.add_args('-drive', f'format=raw,if=none,file={drive},id=hd0')
-        self.vm.add_args('-device', 'virtio-blk-pci,drive=hd0')
-        self.vm.add_args('-device', 'virtio-9p-pci,fsdev=shr0,mount_tag=shr0')
-        self.vm.add_args('-fsdev', f'local,security_model=none,path={rme_stack},id=shr0')
-        self.vm.add_args('-device', 'virtio-net-pci,netdev=net0')
-        self.vm.add_args('-netdev', 'user,id=net0')
-
+        self.vm.add_args('-drive', f'file=fat:rw:{efi},format=raw')
+        self.vm.add_args('-drive', f'format=raw,file={rootfs},if=virtio')
+        self.vm.add_args('-virtfs',
+                         f'local,path={rme_stack}/,mount_tag=host,'
+                         'security_model=mapped,readonly=off')
         self.vm.launch()
-        # Wait for host VM boot to complete.
-        wait_for_console_pattern(self, 'Welcome to Buildroot',
-                                 failure_message='Synchronous Exception at')
-        exec_command_and_wait_for_pattern(self, 'root', '#')
-
-        test_realms_guest(self)
+        # Wait for host and guest VM boot to complete.
+        wait_for_console_pattern(self, 'root@guest',
+                                 failure_message='Kernel panic')
 
 if __name__ == '__main__':
     QemuSystemTest.main()
diff --git a/tests/functional/aarch64/test_rme_virt.py b/tests/functional/aarch64/test_rme_virt.py
index 8452d27..bb603aa 100755
--- a/tests/functional/aarch64/test_rme_virt.py
+++ b/tests/functional/aarch64/test_rme_virt.py
@@ -9,50 +9,22 @@
 #
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-import os
+from os.path import join
 
 from qemu_test import QemuSystemTest, Asset
 from qemu_test import exec_command, wait_for_console_pattern
 from qemu_test import exec_command_and_wait_for_pattern
 
-def test_realms_guest(test_rme_instance):
-
-    # Boot the (nested) guest VM
-    exec_command(test_rme_instance,
-                 'qemu-system-aarch64 -M virt,gic-version=3 '
-                 '-cpu host -enable-kvm -m 512M '
-                 '-M confidential-guest-support=rme0 '
-                 '-object rme-guest,id=rme0 '
-                 '-device virtio-net-pci,netdev=net0,romfile= '
-                 '-netdev user,id=net0 '
-                 '-kernel /mnt/out/bin/Image '
-                 '-initrd /mnt/out-br/images/rootfs.cpio '
-                 '-serial stdio')
-    # Detect Realm activation during (nested) guest boot.
-    wait_for_console_pattern(test_rme_instance,
-                             'SMC_RMI_REALM_ACTIVATE')
-    # Wait for (nested) guest boot to complete.
-    wait_for_console_pattern(test_rme_instance,
-                             'Welcome to Buildroot')
-    exec_command_and_wait_for_pattern(test_rme_instance, 'root', '#')
-    # query (nested) guest cca report
-    exec_command(test_rme_instance, 'cca-workload-attestation report')
-    wait_for_console_pattern(test_rme_instance,
-                             '"cca-platform-hash-algo-id": "sha-256"')
-    wait_for_console_pattern(test_rme_instance,
-                             '"cca-realm-hash-algo-id": "sha-512"')
-    wait_for_console_pattern(test_rme_instance,
-                             '"cca-realm-public-key-hash-algo-id": "sha-256"')
-
 class Aarch64RMEVirtMachine(QemuSystemTest):
 
-    # Stack is built with OP-TEE build environment from those instructions:
+    # Stack is inspired from:
     # https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/
-    # https://github.com/pbo-linaro/qemu-rme-stack
+    # https://github.com/pbo-linaro/qemu-linux-stack/tree/rme_release
+    # ./build.sh && ./archive_artifacts.sh out.tar.xz
     ASSET_RME_STACK_VIRT = Asset(
-        ('https://fileserver.linaro.org/s/iaRsNDJp2CXHMSJ/'
-         'download/rme-stack-op-tee-4.2.0-cca-v4-qemu_v8.tar.gz'),
-         '1851adc232b094384d8b879b9a2cfff07ef3d6205032b85e9b3a4a9ae6b0b7ad')
+        ('https://github.com/pbo-linaro/qemu-linux-stack/'
+         'releases/download/build/rme_release-86101e5.tar.xz'),
+         'e42fef8439badb52a071ac446fc33cff4cb7d61314c7a28fdbe61a11e1faad3a')
 
     # This tests the FEAT_RME cpu implementation, by booting a VM supporting it,
     # and launching a nested VM using it.
@@ -63,15 +35,16 @@ class Aarch64RMEVirtMachine(QemuSystemTest):
 
         self.vm.set_console()
 
-        stack_path_tar_gz = self.ASSET_RME_STACK_VIRT.fetch()
-        self.archive_extract(stack_path_tar_gz, format="tar")
+        stack_path_tar = self.ASSET_RME_STACK_VIRT.fetch()
+        self.archive_extract(stack_path_tar, format="tar")
 
-        rme_stack = self.scratch_file('rme-stack-op-tee-4.2.0-cca-v4-qemu_v8')
-        kernel = os.path.join(rme_stack, 'out', 'bin', 'Image')
-        bios = os.path.join(rme_stack, 'out', 'bin', 'flash.bin')
-        drive = os.path.join(rme_stack, 'out-br', 'images', 'rootfs.ext4')
+        rme_stack = self.scratch_file('.')
+        kernel = join(rme_stack, 'out', 'Image')
+        bios = join(rme_stack, 'out', 'flash.bin')
+        rootfs = join(rme_stack, 'out', 'host.ext4')
 
-        self.vm.add_args('-cpu', 'max,x-rme=on,pauth-impdef=on')
+        self.vm.add_args('-cpu', 'max,x-rme=on')
+        self.vm.add_args('-smp', '2')
         self.vm.add_args('-m', '2G')
         self.vm.add_args('-M', 'virt,acpi=off,'
                          'virtualization=on,'
@@ -79,23 +52,25 @@ class Aarch64RMEVirtMachine(QemuSystemTest):
                          'gic-version=3')
         self.vm.add_args('-bios', bios)
         self.vm.add_args('-kernel', kernel)
-        self.vm.add_args('-drive', f'format=raw,if=none,file={drive},id=hd0')
-        self.vm.add_args('-device', 'virtio-blk-pci,drive=hd0')
-        self.vm.add_args('-device', 'virtio-9p-device,fsdev=shr0,mount_tag=shr0')
-        self.vm.add_args('-fsdev', f'local,security_model=none,path={rme_stack},id=shr0')
-        self.vm.add_args('-device', 'virtio-net-pci,netdev=net0')
-        self.vm.add_args('-netdev', 'user,id=net0')
+        self.vm.add_args('-drive', f'format=raw,file={rootfs},if=virtio')
+        self.vm.add_args('-virtfs',
+                         f'local,path={rme_stack}/,mount_tag=host,'
+                         'security_model=mapped,readonly=off')
         # We need to add nokaslr to avoid triggering this sporadic bug:
         # https://gitlab.com/qemu-project/qemu/-/issues/2823
-        self.vm.add_args('-append', 'root=/dev/vda nokaslr')
+        self.vm.add_args('-append',
+                         'nokaslr root=/dev/vda rw init=/init --'
+                         ' /host/out/lkvm run --realm'
+                         ' -m 256m'
+                         ' --restricted_mem'
+                         ' --kernel /host/out/Image'
+                         ' --disk /host/out/guest.ext4'
+                         ' --params "root=/dev/vda rw init=/init"')
 
         self.vm.launch()
-        # Wait for host VM boot to complete.
-        wait_for_console_pattern(self, 'Welcome to Buildroot',
-                                 failure_message='Synchronous Exception at')
-        exec_command_and_wait_for_pattern(self, 'root', '#')
-
-        test_realms_guest(self)
+        # Wait for host and guest VM boot to complete.
+        wait_for_console_pattern(self, 'root@guest',
+                                 failure_message='Kernel panic')
 
 if __name__ == '__main__':
     QemuSystemTest.main()
diff --git a/tests/qtest/libqtest.h b/tests/qtest/libqtest.h
index b3f2e7f..fd27521 100644
--- a/tests/qtest/libqtest.h
+++ b/tests/qtest/libqtest.h
@@ -977,7 +977,7 @@ void qtest_qmp_fds_assert_success(QTestState *qts, int *fds, size_t nfds,
  * @cb: Pointer to the callback function
  * @skip_old_versioned: true if versioned old machine types should be skipped
  *
- *  Call a callback function for every name of all available machines.
+ * Call a callback function for every name of all available machines.
  */
 void qtest_cb_for_every_machine(void (*cb)(const char *machine),
                                 bool skip_old_versioned);