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Rewrite security note regarding PV to PVH migration

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Requested by QubesOS/qubes-issues#3530
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Andrew David Wong 2018-02-08 09:05:55 -06:00
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releases/4.0/release-notes.md
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@ -31,9 +31,12 @@ New features since 3.2
You can get detailed description in [completed github issues][github-release-notes]
Note
----
* PV VMs restored from R3.2 to R4.x will be automatically migrated to PVH from R4.rc4 to address [QSB 37 (Meltdown & Spectre)][qsb-37]. However PV VMs restored from R4.x are not migrated.
Security Notes
--------------
* PV VMs migrated from 3.2 to 4.0-rc4 or later are automatically set to PVH mode in order to protect against Meltdown (see [QSB #37][qsb-37]).
However, PV VMs migrated from any earlier 4.0 release candidate (RC1, RC2, or RC3) are not automically set to PVH mode.
These must be set manually.
Known issues
------------
@ -44,8 +47,6 @@ Known issues
* For other known issues take a look at [our tickets](https://github.com/QubesOS/qubes-issues/issues?q=is%3Aopen+is%3Aissue+milestone%3A%22Release+4.0%22+label%3Abug)
* Until R4.rc3 included, PV VMs restored from R3.x backup will not automatically be migrated to PVH mode and may be exposed to [QSB 37][qsb-37].
It is advised to install updates just after system installation to apply bug fixes for (some of) the above problems.
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