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version 1.182, 2020/11/15 14:47:55
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version 1.185, 2020/11/15 14:59:54
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Line 15 website](http://www.xenproject.org/).
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Line 15 website](http://www.xenproject.org/).
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| [[!toc]] |
[[!toc]] |
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| # Overview: Versions of Xen, Styles, NetBSD |
# Overview |
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| The basic concept of Xen is that the hypervisor (xenkernel) runs on |
The basic concept of Xen is that the hypervisor (xenkernel) runs on |
| the hardware, and runs a privileged domain ("dom0") that can access |
the hardware, and runs a privileged domain ("dom0") that can access |
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Line 60 is required. Thus, a dom0 can be PVHv2.
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Line 60 is required. Thus, a dom0 can be PVHv2.
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| The source code uses PVH and config files use pvh; this refers to PVHv2. |
The source code uses PVH and config files use pvh; this refers to PVHv2. |
| See [PVH(v2)](https://wiki.xenproject.org/wiki/PVH_(v2\)_Domu). |
See [PVH(v2)](https://wiki.xenproject.org/wiki/PVH_(v2\)_Domu). |
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| At system boot, the dom0 kernel is loaded as a module with Xen as the kernel. |
At system boot, the dom0 kernel is loaded as a module with Xen as the kernel. |
| The dom0 can start one or more domUs. (Booting is explained in detail |
The dom0 can start one or more domUs. (Booting is explained in detail |
| in the dom0 section.) |
in the dom0 section.) |
|
Line 86 matching versions.
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Line 85 matching versions.
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| Versions available in pkgsrc: |
Versions available in pkgsrc: |
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| [[!table data=""" |
[[!table data=""" |
| Xen Version |Package Name |Xen CPU Support |xm? |EOL'ed By Upstream |
Xen Version |Package Name |Xen CPU Support |EOL'ed By Upstream |
| 4.11 |xenkernel411 |x86_64 | |No |
4.11 |xenkernel411 |x86_64 |No |
| 4.13 |xenkernel413 |x86_64 | |No |
4.13 |xenkernel413 |x86_64 |No |
| """]] |
"""]] |
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| See also the [Xen Security Advisory page](http://xenbits.xen.org/xsa/). |
See also the [Xen Security Advisory page](http://xenbits.xen.org/xsa/). |
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| Multiprocessor (SMP) support in NetBSD differs depending on the domain: |
Older Xen had a python-based management tool called xm, now replaced |
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by xl. |
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| [[!table data=""" |
## NetBSD versions |
| Domain |Supports SMP |
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| dom0 |No |
Xen has been supported in NetBSD for a long time, at least since 2005. |
| domU |Yes |
Initially Xen was PV only. |
| """]] |
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NetBSD 8 and up support PV and HVM modes. |
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Support for PVHVM and PVH is available only in NetBSD-current. |
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NetBSD as a dom0 does not run SMP, because some drivers are not yet |
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safe for this. \todo Link to more information about what needs work. |
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NetBSD, when run as a domU, can and does typically run SMP. |
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| Note: NetBSD support is called XEN3. However, it does support Xen 4, |
Note: NetBSD support is called XEN3. However, it does support Xen 4, |
| because the hypercall interface has remained identical. |
because the hypercall interface has remained identical. |
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| Older Xen had a python-based management tool called xm, now replaced |
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| by xl. |
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| # Creating a dom0 |
# Creating a dom0 |
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| In order to install a NetBSD as a dom0, one must first install a normal |
In order to install a NetBSD as a dom0, one must first install a normal |
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Line 506 It is also desirable to add
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Line 511 It is also desirable to add
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| powerd=YES |
powerd=YES |
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| in rc.conf. This way, the domain will be properly shut down if |
in rc.conf. This way, the domain will be properly shut down if |
| `xm shutdown -R` or `xm shutdown -H` is used on the dom0. |
`xl shutdown -R` or `xl shutdown -H` is used on the dom0. |
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\todo Check the translation to xl. |
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| It is not strictly necessary to have a kernel (as /netbsd) in the domU |
It is not strictly necessary to have a kernel (as /netbsd) in the domU |
| file system. However, various programs (e.g. netstat) will use that |
file system. However, various programs (e.g. netstat) will use that |
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