MFC r305692:Add FPU_KERN_NOCTX flag to the fpu_kern_enter() function on amd64.
Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.Prune svn:mergeinfo from the new branch, as nothing has been mergedhere.Additional commits post-branch will follow.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
Spelling fixes supplied by pfg@, detected with codespell, plusadditional misspellings detected by igor.MFC after: 1 week
minor updates to make it more explicit that when using fpu_kern_thread,you don't need to use fpu_kern_enter/_leave...Reviewed by: kib
Several small fixes (typos, grammar, mdoc).
Add documentation for the fpu_kern(9) interfaces.Many thanks to jmg for reviewing the (previous version) of the textand providing grammar and content fixes.Sponsored by: The FreeBSD FoundationMFC after: 1 week