12793 kernel FPU support

Review Request #2569 - Created June 5, 2020 and updated

Information
Jerry Jelinek
illumos-gate
12793
Reviewers
general

This change provides the infrastructure to allow the kernel to use the FPU. This is work that Robert Mustacchi started at Joyent, and which I have added to. There is no consumer for this change in this code review, but the code review for 12794, which adds FPU SIMD support to zfs for the raidz parity calculations, does consume this code. That change was how this kfpu code was tested.


  

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Description From Last Updated
Jason King
Jason King
C Fraire
Paul Winder
Jerry Jelinek
Jerry Jelinek
C Fraire
Ryan Zezeski
Jerry Jelinek
Jerry Jelinek
C Fraire
Ryan Zezeski
Jerry Jelinek
C Fraire
C Fraire

LGTM

Ryan Zezeski
Ship It!
Jason King
Ship It!
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