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MFC r328083,328096,328116,328119,328120,328128,328135,328153,328157,

Description

MFC r328083,328096,328116,328119,328120,328128,328135,328153,328157,
328166,328177,328199,328202,328205,328468,328470,328624,328625,328627,
328628,329214,329297,329365:

Meltdown mitigation by PTI, PCID optimization of PTI, and kernel use of IBRS
for some mitigations of Spectre.

Tested by: emaste, Arshan Khanifar <arshankhanifar@gmail.com>
Discussed with: jkim
Sponsored by: The FreeBSD Foundation

Details

Provenance
kibAuthored on
Parents
rS329461: Revert r329448.
Branches
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