OpenBSD Errata: September 21st, 2018 (ldtr)

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OpenBSD Errata: September 21st, 2018 (ldtr)

T.J. Townsend
Errata patches for the kernel have been released for OpenBSD 6.3 and 6.2.

On AMD CPUs, LDTR must be managed crossing between VMs.

Binary updates for the amd64 platform are available via the syspatch utility.
Source code patches can be found on the respective errata pages:

  https://www.openbsd.org/errata62.html
  https://www.openbsd.org/errata63.html

As these affect the kernel, a reboot will be needed after patching.