diff --git a/user/hardware/certified-hardware.md b/user/hardware/certified-hardware.md index e216e9f6..f88998ab 100644 --- a/user/hardware/certified-hardware.md +++ b/user/hardware/certified-hardware.md @@ -54,8 +54,8 @@ The benefits of hardware certification include: ## Hardware Certification Requirements -(Please note that these are the requirements for hardware *certification*, *not* the requirements for *running* Qubes 4. -For the latter, please see the [system requirements for 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].) 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. @@ -102,10 +102,9 @@ If you are interested in having your hardware certified, please [contact us]. [version-scheme]: /doc/version-scheme/ [Hardware Testing]: /doc/hardware-testing/ [stateless laptop]: https://blog.invisiblethings.org/2015/12/23/state_harmful.html -[System Requirements]: /doc/system-requirements/ [Hardware Compatibility List]: /hcl/ [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 [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