MFC: r322076

Detect hypervisor early so that we set lower hz on it.
> Description of fields to fill in above:                     76 columns --|
> PR:                       If and which Problem Report is related.
> Submitted by:             If someone else sent in the change.
> Reported by:              If someone else reported the issue.
> Reviewed by:              If someone else reviewed your modification.
> Approved by:              If you needed approval for this commit.
> Obtained from:            If the change is from a third party.
> MFC after:                N [day[s]|week[s]|month[s]].  Request a reminder email.
> MFH:                      Ports tree branch name.  Request approval for merge.
> Relnotes:                 Set to 'yes' for mention in release notes.
> Security:                 Vulnerability reference (one per line) or description.
> Sponsored by:             If the change was sponsored by an organization.
> Differential Revision:    https://reviews.freebsd.org/D### (*full* phabric URL needed).
> Empty fields above will be automatically removed.

_M   .
M    sys/amd64/amd64/machdep.c
M    sys/amd64/include/md_var.h
M    sys/i386/i386/machdep.c
M    sys/i386/include/md_var.h
M    sys/x86/x86/identcpu.c

0 files changed, 0 insertions, 0 deletions