[PATCH v5 5/5] cpu_ppc64: Add POWER11 host-model support

Narayana Murty N posted 5 patches 3 months, 4 weeks ago
[PATCH v5 5/5] cpu_ppc64: Add POWER11 host-model support
Posted by Narayana Murty N 3 months, 4 weeks ago
This patch adds POWER11 CPU host-model support in libvirt's ppc64
CPU driver. With this addition, guests using CPU mode 'host-model'
can specify POWER11 as the CPU model and have libvirt handle it
correctly.

With this change, libvirt can generate correct QEMU command line using
`-machine ... max-cpu-compat=power11` when a POWER11 host-model guest is
defined. This aligns with the QEMU support for POWER11 compatibility mode
starting from version 10.0.0.

Test coverage includes:
- XML validation tests for POWER11 host model
- Negative test for invalid compatibility on POWER10 hosts
- Command line generation tests for POWER11 guests

Signed-off-by: Narayana Murty N <nnmlinux@linux.ibm.com>
---
 src/cpu/cpu_ppc64.c                           |  8 ++---
 ...eries-cpu-compat-power11.ppc64-latest.args | 31 +++++++++++++++++++
 ...series-cpu-compat-power11.ppc64-latest.err |  1 +
 ...series-cpu-compat-power11.ppc64-latest.xml | 29 +++++++++++++++++
 .../pseries-cpu-compat-power11.xml            | 19 ++++++++++++
 tests/qemuxmlconftest.c                       |  4 +++
 tests/testutilshostcpus.h                     | 11 +++++++
 tests/testutilsqemu.c                         |  4 +++
 tests/testutilsqemu.h                         |  1 +
 9 files changed, 104 insertions(+), 4 deletions(-)
 create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args
 create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err
 create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml
 create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml

diff --git a/src/cpu/cpu_ppc64.c b/src/cpu/cpu_ppc64.c
index 13f5fc9c2c..8673d4f759 100644
--- a/src/cpu/cpu_ppc64.c
+++ b/src/cpu/cpu_ppc64.c
@@ -93,22 +93,22 @@ ppc64CheckCompatibilityMode(const char *host_model,
     if (!compat_mode)
         return VIR_CPU_COMPARE_IDENTICAL;
 
-    /* Valid host CPUs: POWER6, POWER7, POWER8, POWER9, POWER10 */
+    /* Valid host CPUs: POWER6, POWER7, POWER8, POWER9, POWER10, POWER11 */
     if (!STRPREFIX(host_model, "POWER") ||
         !(tmp = (char *) host_model + strlen("POWER")) ||
         virStrToLong_i(tmp, NULL, 10, &host) < 0 ||
-        host < 6 || host > 10) {
+        host < 6 || host > 11) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        "%s",
                        _("Host CPU does not support compatibility modes"));
         return VIR_CPU_COMPARE_ERROR;
     }
 
-    /* Valid compatibility modes: power6, power7, power8, power9, power10 */
+    /* Valid compatibility modes: power6, power7, power8, power9, power10, power11 */
     if (!STRPREFIX(compat_mode, "power") ||
         !(tmp = (char *) compat_mode + strlen("power")) ||
         virStrToLong_i(tmp, NULL, 10, &compat) < 0 ||
-        compat < 6 || compat > 10) {
+        compat < 6 || compat > 11) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Unknown compatibility mode %1$s"),
                        compat_mode);
diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args
new file mode 100644
index 0000000000..a800f81905
--- /dev/null
+++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args
@@ -0,0 +1,31 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-ppc64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram,max-cpu-compat=power11 \
+-accel kvm \
+-cpu host \
+-m size=262144k \
+-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":268435456}' \
+-overcommit mem-lock=off \
+-smp 4,sockets=4,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err
new file mode 100644
index 0000000000..f2322ccea5
--- /dev/null
+++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err
@@ -0,0 +1 @@
+the CPU is incompatible with host CPU
diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml
new file mode 100644
index 0000000000..75c2b625c2
--- /dev/null
+++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml
@@ -0,0 +1,29 @@
+<domain type='kvm'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='ppc64' machine='pseries'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <cpu mode='host-model' check='partial'>
+    <model fallback='allow'>power11</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-ppc64</emulator>
+    <controller type='usb' index='0' model='none'/>
+    <controller type='pci' index='0' model='pci-root'>
+      <model name='spapr-pci-host-bridge'/>
+      <target index='0'/>
+    </controller>
+    <audio id='1' type='none'/>
+    <memballoon model='none'/>
+    <panic model='pseries'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml
new file mode 100644
index 0000000000..2dcdc651ef
--- /dev/null
+++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml
@@ -0,0 +1,19 @@
+<domain type='kvm'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='ppc64' machine='pseries'>hvm</type>
+  </os>
+  <cpu mode='host-model'>
+    <model>power11</model>
+  </cpu>
+  <clock offset='utc'/>
+  <devices>
+      <emulator>/usr/bin/qemu-system-ppc64</emulator>
+      <controller type='usb' model='none'/>
+      <memballoon model="none"/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
index 3f916e5228..ee95733919 100644
--- a/tests/qemuxmlconftest.c
+++ b/tests/qemuxmlconftest.c
@@ -2379,6 +2379,10 @@ mymain(void)
                                               QEMU_CPU_DEF_POWER9);
     DO_TEST_CAPS_LATEST_PPC64_HOSTCPU("pseries-cpu-compat-power10",
                                       QEMU_CPU_DEF_POWER10);
+    DO_TEST_CAPS_LATEST_PPC64_HOSTCPU_FAILURE("pseries-cpu-compat-power11",
+                                              QEMU_CPU_DEF_POWER10);
+    DO_TEST_CAPS_LATEST_PPC64_HOSTCPU("pseries-cpu-compat-power11",
+                                      QEMU_CPU_DEF_POWER11);
 
     qemuTestSetHostArch(&driver, VIR_ARCH_NONE);
 
diff --git a/tests/testutilshostcpus.h b/tests/testutilshostcpus.h
index 79c37baed4..36118d6acb 100644
--- a/tests/testutilshostcpus.h
+++ b/tests/testutilshostcpus.h
@@ -123,6 +123,15 @@ static virCPUDef cpuPower10Data = {
     .threads = 1,
 };
 
+static virCPUDef cpuPower11Data = {
+    .type = VIR_CPU_TYPE_HOST,
+    .arch = VIR_ARCH_PPC64,
+    .model = (char *) "POWER11",
+    .sockets = 1,
+    .cores = 16,
+    .threads = 1,
+};
+
 static virCPUDef cpuAarch64Data = {
     .type = VIR_CPU_TYPE_HOST,
     .arch = VIR_ARCH_AARCH64,
@@ -197,6 +206,8 @@ testUtilsHostCpusGetDefForModel(const char *model)
         return virCPUDefCopy(&cpuPower9Data);
     else if (STREQ(model, "POWER10"))
         return virCPUDefCopy(&cpuPower10Data);
+    else if (STREQ(model, "POWER11"))
+        return virCPUDefCopy(&cpuPower11Data);
 
     return NULL;
 }
diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c
index ecd761dff0..9038a37869 100644
--- a/tests/testutilsqemu.c
+++ b/tests/testutilsqemu.c
@@ -24,6 +24,7 @@ static virCPUDef *cpuHaswell;
 static virCPUDef *cpuPower8;
 static virCPUDef *cpuPower9;
 static virCPUDef *cpuPower10;
+static virCPUDef *cpuPower11;
 
 char *
 virFindFileInPath(const char *file)
@@ -166,6 +167,7 @@ qemuTestGetCPUDef(qemuTestCPUDef d)
     case QEMU_CPU_DEF_POWER8: return cpuPower8;
     case QEMU_CPU_DEF_POWER9: return cpuPower9;
     case QEMU_CPU_DEF_POWER10: return cpuPower10;
+    case QEMU_CPU_DEF_POWER11: return cpuPower11;
     }
 
     return NULL;
@@ -251,6 +253,7 @@ void qemuTestDriverFree(virQEMUDriver *driver)
     virCPUDefFree(cpuPower8);
     virCPUDefFree(cpuPower9);
     virCPUDefFree(cpuPower10);
+    virCPUDefFree(cpuPower11);
 }
 
 
@@ -303,6 +306,7 @@ int qemuTestDriverInit(virQEMUDriver *driver)
     cpuPower8 = virCPUDefCopy(&cpuPower8Data);
     cpuPower9 = virCPUDefCopy(&cpuPower9Data);
     cpuPower10 = virCPUDefCopy(&cpuPower10Data);
+    cpuPower11 = virCPUDefCopy(&cpuPower11Data);
 
     if (virMutexInit(&driver->lock) < 0)
         return -1;
diff --git a/tests/testutilsqemu.h b/tests/testutilsqemu.h
index 20135b8390..62943bb2d8 100644
--- a/tests/testutilsqemu.h
+++ b/tests/testutilsqemu.h
@@ -78,6 +78,7 @@ typedef enum {
     QEMU_CPU_DEF_POWER8,
     QEMU_CPU_DEF_POWER9,
     QEMU_CPU_DEF_POWER10,
+    QEMU_CPU_DEF_POWER11,
 } qemuTestCPUDef;
 
 struct testQemuArgs {
-- 
2.48.1
Re: [PATCH v5 5/5] cpu_ppc64: Add POWER11 host-model support
Posted by Shivaprasad G Bhat 3 months, 2 weeks ago
On 5/13/25 1:13 PM, Narayana Murty N wrote:
> This patch adds POWER11 CPU host-model support in libvirt's ppc64
> CPU driver. With this addition, guests using CPU mode 'host-model'
> can specify POWER11 as the CPU model and have libvirt handle it
> correctly.
>
> With this change, libvirt can generate correct QEMU command line using
> `-machine ... max-cpu-compat=power11` when a POWER11 host-model guest is
> defined. This aligns with the QEMU support for POWER11 compatibility mode
> starting from version 10.0.0.
>
> Test coverage includes:
> - XML validation tests for POWER11 host model
> - Negative test for invalid compatibility on POWER10 hosts
> - Command line generation tests for POWER11 guests

Tested the changes on Power11 server.

For,

   <cpu mode='host-model' check='none'>
     <model fallback='forbid'>power11</model>
   </cpu>

Without patch:

# virsh start testdomain
error: Failed to start domain 'testdomain'
error: unsupported configuration: CPU mode 'host-model' for ppc64le kvm 
domain on ppc64le host is not supported by hypervisor


With the patch:
# virsh start testdomain
Domain 'testdomain' started


Working as expected, and as before with Power10/9/8

So,

Tested-By: Shivaprasad G Bhat <sbhat@linux.ibm.com>


The changes look reasonable to me.

Reviewed-By: Shivaprasad G Bhat <sbhat@linux.ibm.com>


Thanks,

Shivaprasad


>
> Signed-off-by: Narayana Murty N <nnmlinux(a)linux.ibm.com>
> ---
>   src/cpu/cpu_ppc64.c                           |  8 ++---
>   ...eries-cpu-compat-power11.ppc64-latest.args | 31 +++++++++++++++++++
>   ...series-cpu-compat-power11.ppc64-latest.err |  1 +
>   ...series-cpu-compat-power11.ppc64-latest.xml | 29 +++++++++++++++++
>   .../pseries-cpu-compat-power11.xml            | 19 ++++++++++++
>   tests/qemuxmlconftest.c                       |  4 +++
>   tests/testutilshostcpus.h                     | 11 +++++++
>   tests/testutilsqemu.c                         |  4 +++
>   tests/testutilsqemu.h                         |  1 +
>   9 files changed, 104 insertions(+), 4 deletions(-)
>   create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args
>   create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err
>   create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml
>   create mode 100644 tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml
>
> diff --git a/src/cpu/cpu_ppc64.c b/src/cpu/cpu_ppc64.c
> index 13f5fc9c2c..8673d4f759 100644
> --- a/src/cpu/cpu_ppc64.c
> +++ b/src/cpu/cpu_ppc64.c
> @@ -93,22 +93,22 @@ ppc64CheckCompatibilityMode(const char *host_model,
>       if (!compat_mode)
>           return VIR_CPU_COMPARE_IDENTICAL;
>   
> -    /* Valid host CPUs: POWER6, POWER7, POWER8, POWER9, POWER10 */
> +    /* Valid host CPUs: POWER6, POWER7, POWER8, POWER9, POWER10, POWER11 */
>       if (!STRPREFIX(host_model, "POWER") ||
>           !(tmp = (char *) host_model + strlen("POWER")) ||
>           virStrToLong_i(tmp, NULL, 10, &host) < 0 ||
> -        host < 6 || host > 10) {
> +        host < 6 || host > 11) {
>           virReportError(VIR_ERR_INTERNAL_ERROR,
>                          "%s",
>                          _("Host CPU does not support compatibility modes"));
>           return VIR_CPU_COMPARE_ERROR;
>       }
>   
> -    /* Valid compatibility modes: power6, power7, power8, power9, power10 */
> +    /* Valid compatibility modes: power6, power7, power8, power9, power10, power11 */
>       if (!STRPREFIX(compat_mode, "power") ||
>           !(tmp = (char *) compat_mode + strlen("power")) ||
>           virStrToLong_i(tmp, NULL, 10, &compat) < 0 ||
> -        compat < 6 || compat > 10) {
> +        compat < 6 || compat > 11) {
>           virReportError(VIR_ERR_INTERNAL_ERROR,
>                          _("Unknown compatibility mode %1$s"),
>                          compat_mode);
> diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args
> new file mode 100644
> index 0000000000..a800f81905
> --- /dev/null
> +++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.args
> @@ -0,0 +1,31 @@
> +LC_ALL=C \
> +PATH=/bin \
> +HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
> +USER=test \
> +LOGNAME=test \
> +XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
> +XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
> +XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
> +/usr/bin/qemu-system-ppc64 \
> +-name guest=QEMUGuest1,debug-threads=on \
> +-S \
> +-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
> +-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram,max-cpu-compat=power11 \
> +-accel kvm \
> +-cpu host \
> +-m size=262144k \
> +-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":268435456}' \
> +-overcommit mem-lock=off \
> +-smp 4,sockets=4,cores=1,threads=1 \
> +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
> +-display none \
> +-no-user-config \
> +-nodefaults \
> +-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
> +-mon chardev=charmonitor,id=monitor,mode=control \
> +-rtc base=utc \
> +-no-shutdown \
> +-boot strict=on \
> +-audiodev '{"id":"audio1","driver":"none"}' \
> +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
> +-msg timestamp=on
> diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err
> new file mode 100644
> index 0000000000..f2322ccea5
> --- /dev/null
> +++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.err
> @@ -0,0 +1 @@
> +the CPU is incompatible with host CPU
> diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml
> new file mode 100644
> index 0000000000..75c2b625c2
> --- /dev/null
> +++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.ppc64-latest.xml
> @@ -0,0 +1,29 @@
> +<domain type='kvm'>
> +  <name>QEMUGuest1</name>
> +  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> +  <memory unit='KiB'>219100</memory>
> +  <currentMemory unit='KiB'>219100</currentMemory>
> +  <vcpu placement='static'>4</vcpu>
> +  <os>
> +    <type arch='ppc64' machine='pseries'>hvm</type>
> +    <boot dev='hd'/>
> +  </os>
> +  <cpu mode='host-model' check='partial'>
> +    <model fallback='allow'>power11</model>
> +  </cpu>
> +  <clock offset='utc'/>
> +  <on_poweroff>destroy</on_poweroff>
> +  <on_reboot>restart</on_reboot>
> +  <on_crash>destroy</on_crash>
> +  <devices>
> +    <emulator>/usr/bin/qemu-system-ppc64</emulator>
> +    <controller type='usb' index='0' model='none'/>
> +    <controller type='pci' index='0' model='pci-root'>
> +      <model name='spapr-pci-host-bridge'/>
> +      <target index='0'/>
> +    </controller>
> +    <audio id='1' type='none'/>
> +    <memballoon model='none'/>
> +    <panic model='pseries'/>
> +  </devices>
> +</domain>
> diff --git a/tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml
> new file mode 100644
> index 0000000000..2dcdc651ef
> --- /dev/null
> +++ b/tests/qemuxmlconfdata/pseries-cpu-compat-power11.xml
> @@ -0,0 +1,19 @@
> +<domain type='kvm'>
> +  <name>QEMUGuest1</name>
> +  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> +  <memory unit='KiB'>219100</memory>
> +  <currentMemory unit='KiB'>219100</currentMemory>
> +  <vcpu placement='static'>4</vcpu>
> +  <os>
> +    <type arch='ppc64' machine='pseries'>hvm</type>
> +  </os>
> +  <cpu mode='host-model'>
> +    <model>power11</model>
> +  </cpu>
> +  <clock offset='utc'/>
> +  <devices>
> +      <emulator>/usr/bin/qemu-system-ppc64</emulator>
> +      <controller type='usb' model='none'/>
> +      <memballoon model="none"/>
> +  </devices>
> +</domain>
> diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
> index 3f916e5228..ee95733919 100644
> --- a/tests/qemuxmlconftest.c
> +++ b/tests/qemuxmlconftest.c
> @@ -2379,6 +2379,10 @@ mymain(void)
>                                                 QEMU_CPU_DEF_POWER9);
>       DO_TEST_CAPS_LATEST_PPC64_HOSTCPU("pseries-cpu-compat-power10",
>                                         QEMU_CPU_DEF_POWER10);
> +    DO_TEST_CAPS_LATEST_PPC64_HOSTCPU_FAILURE("pseries-cpu-compat-power11",
> +                                              QEMU_CPU_DEF_POWER10);
> +    DO_TEST_CAPS_LATEST_PPC64_HOSTCPU("pseries-cpu-compat-power11",
> +                                      QEMU_CPU_DEF_POWER11);
>   
>       qemuTestSetHostArch(&driver, VIR_ARCH_NONE);
>   
> diff --git a/tests/testutilshostcpus.h b/tests/testutilshostcpus.h
> index 79c37baed4..36118d6acb 100644
> --- a/tests/testutilshostcpus.h
> +++ b/tests/testutilshostcpus.h
> @@ -123,6 +123,15 @@ static virCPUDef cpuPower10Data = {
>       .threads = 1,
>   };
>   
> +static virCPUDef cpuPower11Data = {
> +    .type = VIR_CPU_TYPE_HOST,
> +    .arch = VIR_ARCH_PPC64,
> +    .model = (char *) "POWER11",
> +    .sockets = 1,
> +    .cores = 16,
> +    .threads = 1,
> +};
> +
>   static virCPUDef cpuAarch64Data = {
>       .type = VIR_CPU_TYPE_HOST,
>       .arch = VIR_ARCH_AARCH64,
> @@ -197,6 +206,8 @@ testUtilsHostCpusGetDefForModel(const char *model)
>           return virCPUDefCopy(&cpuPower9Data);
>       else if (STREQ(model, "POWER10"))
>           return virCPUDefCopy(&cpuPower10Data);
> +    else if (STREQ(model, "POWER11"))
> +        return virCPUDefCopy(&cpuPower11Data);
>   
>       return NULL;
>   }
> diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c
> index ecd761dff0..9038a37869 100644
> --- a/tests/testutilsqemu.c
> +++ b/tests/testutilsqemu.c
> @@ -24,6 +24,7 @@ static virCPUDef *cpuHaswell;
>   static virCPUDef *cpuPower8;
>   static virCPUDef *cpuPower9;
>   static virCPUDef *cpuPower10;
> +static virCPUDef *cpuPower11;
>   
>   char *
>   virFindFileInPath(const char *file)
> @@ -166,6 +167,7 @@ qemuTestGetCPUDef(qemuTestCPUDef d)
>       case QEMU_CPU_DEF_POWER8: return cpuPower8;
>       case QEMU_CPU_DEF_POWER9: return cpuPower9;
>       case QEMU_CPU_DEF_POWER10: return cpuPower10;
> +    case QEMU_CPU_DEF_POWER11: return cpuPower11;
>       }
>   
>       return NULL;
> @@ -251,6 +253,7 @@ void qemuTestDriverFree(virQEMUDriver *driver)
>       virCPUDefFree(cpuPower8);
>       virCPUDefFree(cpuPower9);
>       virCPUDefFree(cpuPower10);
> +    virCPUDefFree(cpuPower11);
>   }
>   
>   
> @@ -303,6 +306,7 @@ int qemuTestDriverInit(virQEMUDriver *driver)
>       cpuPower8 = virCPUDefCopy(&cpuPower8Data);
>       cpuPower9 = virCPUDefCopy(&cpuPower9Data);
>       cpuPower10 = virCPUDefCopy(&cpuPower10Data);
> +    cpuPower11 = virCPUDefCopy(&cpuPower11Data);
>   
>       if (virMutexInit(&driver->lock) < 0)
>           return -1;
> diff --git a/tests/testutilsqemu.h b/tests/testutilsqemu.h
> index 20135b8390..62943bb2d8 100644
> --- a/tests/testutilsqemu.h
> +++ b/tests/testutilsqemu.h
> @@ -78,6 +78,7 @@ typedef enum {
>       QEMU_CPU_DEF_POWER8,
>       QEMU_CPU_DEF_POWER9,
>       QEMU_CPU_DEF_POWER10,
> +    QEMU_CPU_DEF_POWER11,
>   } qemuTestCPUDef;
>   
>   struct testQemuArgs {