git: kernel: Add more detailed VM detection.

[Sascha Wildner]

commit 5a1223c17c5bf9ecbba67f80b4c43b6ff0bb000a
Author: Sascha Wildner <saw at online.de>
Date:   Tue Mar 4 19:07:21 2014 +0100

    kernel: Add more detailed VM detection.
    
    Previously, the kernel global 'vmm_guest' was either 0 or 1 depending
    on the VMM bit in the CPU features (which isn't set in all VMs).
    
    This commit adds more detailed information by checking the emulated
    BIOS for known strings. The detected VMs include vkernel, which
    doesn't strictly fit into the category, but it shares enough
    similarities for this to be useful.
    
    Also expose this information in a read-only sysctl (kern.vmm_guest).
    
    The detection code was kind of adapted from FreeBSD (although their
    kern.vm_guest works differently).
    
    Tested-by: tuxillo

Summary of changes:
 sys/kern/subr_param.c                  | 89 +++++++++++++++++++++++++++++++++-
 sys/platform/pc32/i386/initcpu.c       |  6 ++-
 sys/platform/pc64/x86_64/initcpu.c     |  9 ++--
 sys/platform/vkernel/platform/init.c   |  2 +-
 sys/platform/vkernel64/platform/init.c |  2 +-
 sys/sys/kernel.h                       | 17 +++++++
 sys/sys/systm.h                        |  1 +
 7 files changed, 118 insertions(+), 8 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/5a1223c17c5bf9ecbba67f80b4c43b6ff0bb000a


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