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user/hardware/certified-hardware.md
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@ -54,8 +54,8 @@ The benefits of hardware certification include:
## Hardware Certification Requirements ## Hardware Certification Requirements
(Please note that these are the requirements for hardware *certification*, *not* the requirements for *running* Qubes 4. (Please note that these are the requirements for hardware *certification*, *not* the requirements for *running* Qubes.
For the latter, please see the [system requirements for Qubes 4].) For the latter, please see the [system requirements].)
One of the most important security improvements introduced with the release of Qubes 4.0 was to replace paravirtualization (PV) technology with **hardware-enforced memory virtualization**, which recent processors have made possible thanks to so-called Second Level Address Translation ([SLAT]), also known as [EPT][EPT-enabled CPUs] in Intel parlance. One of the most important security improvements introduced with the release of Qubes 4.0 was to replace paravirtualization (PV) technology with **hardware-enforced memory virtualization**, which recent processors have made possible thanks to so-called Second Level Address Translation ([SLAT]), also known as [EPT][EPT-enabled CPUs] in Intel parlance.
SLAT (EPT) is an extension to Intel VT-x virtualization, which originally was capable of only CPU virtualization but not memory virtualization and hence required a complex Shadow Page Tables approach. SLAT (EPT) is an extension to Intel VT-x virtualization, which originally was capable of only CPU virtualization but not memory virtualization and hence required a complex Shadow Page Tables approach.
@ -102,10 +102,9 @@ If you are interested in having your hardware certified, please [contact us].
[version-scheme]: /doc/version-scheme/ [version-scheme]: /doc/version-scheme/
[Hardware Testing]: /doc/hardware-testing/ [Hardware Testing]: /doc/hardware-testing/
[stateless laptop]: https://blog.invisiblethings.org/2015/12/23/state_harmful.html [stateless laptop]: https://blog.invisiblethings.org/2015/12/23/state_harmful.html
[System Requirements]: /doc/system-requirements/
[Hardware Compatibility List]: /hcl/ [Hardware Compatibility List]: /hcl/
[Hardware Certification]: #hardware-certification [Hardware Certification]: #hardware-certification
[system requirements for Qubes 4]: /doc/system-requirements/#qubes-release-4x [system requirements]: /doc/system-requirements/
[contact us]: mailto:business@qubes-os.org [contact us]: mailto:business@qubes-os.org
[SLAT]: https://en.wikipedia.org/wiki/Second_Level_Address_Translation [SLAT]: https://en.wikipedia.org/wiki/Second_Level_Address_Translation
[EPT-enabled CPUs]: https://ark.intel.com/Search/FeatureFilter?productType=processors&ExtendedPageTables=true&MarketSegment=Mobile [EPT-enabled CPUs]: https://ark.intel.com/Search/FeatureFilter?productType=processors&ExtendedPageTables=true&MarketSegment=Mobile