"[PATCH v3 00/26] Implementing a MSHV (Microsoft Hypervisor) accelerator"
patchset in qemu-devel mailing list introduces MSHV support within Qemu.

With above patchset, Qemu guests can be started with `-accel mshv` option to use
Microsoft Hypervisor (/dev/mshv) as the hypervisor. Retaining Libvirt's naming
convention, this translates to `hyperv` domains. Below is an excerpt of the xml
to use with this patchset:

```
<domain type='hyperv'>
		<name>qemu_msh_testv</name>

		<cpu mode='host-model'/>
  	<os>
    		<type machine='q35'>hvm</type>
  	</os>
		...

```

This patch set introduces the necessary changes within libvirt to support Qemu
guest with hyperv (mshv) hypervisor.

Chages in v3:
- Addressed review comments on v2.
- fixed qemucapabilitiestest case
- Added a case to qemuxmlconftest

Changes in v2:
- Addressed review comments on v1.
- Added a test to verify mshv capabilities.

Praveen K Paladugu (8):
  qemu: introduce mshv capabilities
  qemu: use mshv accel for hyperv domains
  qemu: add /dev/mshv to default cgroup acl
  qemu: probe mshv capabilities
  conf: update capability schema
  tests: Add mshv variant for qemucapabilitiestest
  tests: Add domaincaps and qemucaps case for mshv
  tests: add mshv test to qemuxmlconftest

 src/conf/schemas/capability.rng               |     1 +
 src/qemu/qemu.conf.in                         |     2 +-
 src/qemu/qemu_capabilities.c                  |    61 +-
 src/qemu/qemu_capabilities.h                  |     1 +
 src/qemu/qemu_cgroup.c                        |     2 +-
 src/qemu/qemu_command.c                       |     4 +-
 src/qemu/qemu_monitor.c                       |    12 +
 src/qemu/qemu_monitor.h                       |    12 +-
 src/qemu/qemu_monitor_json.c                  |    32 +-
 src/qemu/qemu_monitor_json.h                  |    13 +-
 src/qemu/test_libvirtd_qemu.aug.in            |     3 +-
 .../qemu_10.1.0-q35.x86_64+mshv.xml           |   222 +
 .../qemu_10.1.0-tcg.x86_64+mshv.xml           |  1810 +
 .../qemu_10.1.0.x86_64+mshv.xml               |   222 +
 tests/qemucapabilitiesdata/README.rst         |     5 +
 .../caps_10.1.0_x86_64+mshv.replies           | 46912 ++++++++++++++++
 .../caps_10.1.0_x86_64+mshv.xml               |  4996 ++
 .../qemucaps2xmloutdata/caps.x86_64+mshv.xml  |    29 +
 ...86_64-q35-headless.x86_64-latest+mshv.args |    48 +
 ...x86_64-q35-headless.x86_64-latest+mshv.xml |    87 +
 ...mshv-x86_64-q35-headless.x86_64-latest.err |     1 +
 .../mshv-x86_64-q35-headless.xml              |    35 +
 tests/qemuxmlconftest.c                       |     5 +
 23 files changed, 54495 insertions(+), 20 deletions(-)
 create mode 100644 tests/domaincapsdata/qemu_10.1.0-q35.x86_64+mshv.xml
 create mode 100644 tests/domaincapsdata/qemu_10.1.0-tcg.x86_64+mshv.xml
 create mode 100644 tests/domaincapsdata/qemu_10.1.0.x86_64+mshv.xml
 create mode 100644 tests/qemucapabilitiesdata/caps_10.1.0_x86_64+mshv.replies
 create mode 100644 tests/qemucapabilitiesdata/caps_10.1.0_x86_64+mshv.xml
 create mode 100644 tests/qemucaps2xmloutdata/caps.x86_64+mshv.xml
 create mode 100644 tests/qemuxmlconfdata/mshv-x86_64-q35-headless.x86_64-latest+mshv.args
 create mode 100644 tests/qemuxmlconfdata/mshv-x86_64-q35-headless.x86_64-latest+mshv.xml
 create mode 100644 tests/qemuxmlconfdata/mshv-x86_64-q35-headless.x86_64-latest.err
 create mode 100644 tests/qemuxmlconfdata/mshv-x86_64-q35-headless.xml

-- 
2.50.1

On 8/29/2025 3:28 PM, Praveen K Paladugu wrote:
> "[PATCH v3 00/26] Implementing a MSHV (Microsoft Hypervisor) accelerator"
> patchset in qemu-devel mailing list introduces MSHV support within Qemu.
> 
> With above patchset, Qemu guests can be started with `-accel mshv` option to use
> Microsoft Hypervisor (/dev/mshv) as the hypervisor. Retaining Libvirt's naming
> convention, this translates to `hyperv` domains. Below is an excerpt of the xml
> to use with this patchset:
> 
> ```
> <domain type='hyperv'>
> 		<name>qemu_msh_testv</name>
> 
> 		<cpu mode='host-model'/>
>    	<os>
>      		<type machine='q35'>hvm</type>
>    	</os>
> 		...
> 
> ```
> 
> This patch set introduces the necessary changes within libvirt to support Qemu
> guest with hyperv (mshv) hypervisor.
> 
> Chages in v3:
> - Addressed review comments on v2.
> - fixed qemucapabilitiestest case
> - Added a case to qemuxmlconftest
> 
> Changes in v2:
> - Addressed review comments on v1.
> - Added a test to verify mshv capabilities.
> 

<snip>

Pinging to bubble up this patchset for reviews.

-- 
Regards,
Praveen K Paladugu

Folks,

Bubbling this up for reviews/merge.


On 9/16/2025 9:34 AM, Praveen K Paladugu wrote:
> 
> 
> On 8/29/2025 3:28 PM, Praveen K Paladugu wrote:
>> "[PATCH v3 00/26] Implementing a MSHV (Microsoft Hypervisor) accelerator"
>> patchset in qemu-devel mailing list introduces MSHV support within Qemu.
>>
>> With above patchset, Qemu guests can be started with `-accel mshv` 
>> option to use
>> Microsoft Hypervisor (/dev/mshv) as the hypervisor. Retaining 
>> Libvirt's naming
>> convention, this translates to `hyperv` domains. Below is an excerpt 
>> of the xml
>> to use with this patchset:
>>
>> ```
>> <domain type='hyperv'>
>>         <name>qemu_msh_testv</name>
>>
>>         <cpu mode='host-model'/>
>>        <os>
>>              <type machine='q35'>hvm</type>
>>        </os>
>>         ...
>>
>> ```
>>
>> This patch set introduces the necessary changes within libvirt to 
>> support Qemu
>> guest with hyperv (mshv) hypervisor.
>>
>> Chages in v3:
>> - Addressed review comments on v2.
>> - fixed qemucapabilitiestest case
>> - Added a case to qemuxmlconftest
>>
>> Changes in v2:
>> - Addressed review comments on v1.
>> - Added a test to verify mshv capabilities.
>>
> 
> <snip>
> 
> Pinging to bubble up this patchset for reviews.
> 

-- 
Regards,
Praveen K Paladugu