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Enhance and correct virtualization mode entry

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Andrew David Wong 2018-01-13 20:22:07 -06:00
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about/faq.md
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@ -93,17 +93,19 @@ Here are the answers for Xen 4.1 (which we use as of 2014-04-28):
7. Biggest performance hit on disk operations (especially in Qubes when complex 2-layer mapping used for Linux qubes). No GPU virtualization.
8. Mostly Works<sup>TM</sup> :)
Here is an overview of the VM modes that correspond to each Qubes OS
version:
### Which virtualization modes do VMs use?
VM type \ Qubes OS version | 3.2 | 3.2.+| 4.0-rc1-3 | 4.0-rc4 |
Here is an overview of the VM virtualization modes that correspond to each Qubes OS version (as of 2018-01-13):
VM Type \ Qubes OS version | 3.2 | 3.2+ | 4.0-rc1-3 | 4.0-rc4 |
---------------------------------- | --- | ---- | --------- | ------- |
Default VMs without PCI devices | PV | PVH | HVM | PVH |
Default VMs with PCI devices | PV | PV | HVM | HVM |
Stub domains - VMs w/o PCI devices | PV | N/A | PV | N/A |
Stub domains - VMs w/ PCI devices | PV | PV | PV | PV |
Stub domains - Default VMs w/o PCI | N/A | N/A | PV | N/A |
Stub domains - Default VMs w/ PCI | PV | PV | PV | PV |
Stub domains - HVMs | PV | PV | PV | PV |
("N/A" means "not applicable," since HVMs do not require stub domains.)
("3.2+" denotes Qubes 3.2 after applying the update discussed in [QSB #37](/news/2018/01/11/qsb-37/), which will result in most VMs running in PVH mode. "N/A" means "not applicable." PVH VMs do not require stub domains.)
### What's so special about Qubes' GUI virtualization?