git: nvmm: Don't require <machine/specialreg.h> and be more self-contained

[Aaron LI]

commit df40001a2ee84052443f3eea6678cb86ed17c572
Author: Aaron LI <aly at aaronly.me>
Date:   Sat Aug 23 11:12:02 2025 +0800

    nvmm: Don't require <machine/specialreg.h> and be more self-contained
    
    Define the necessary CR/XCR/MSR registers and their bits by itself, so
    that <machine/specialreg.h> is no longer used and any collisions are
    avoided.  This is similar to the various CPUID defines and it makes NVMM
    more self-contained and portable.
    
    In addition, this commit includes the following improvements/cleanups:
    - Separate the Intel- and AMD-specific registers and define them in
      their own implementations.
    - Define 'MSR_CMPHALT' for AMD/SVM, avoiding the hardcoded 0xC0010055.
    - Rename 'MSR_BIOS_SIGN' to 'MSR_IA32_BIOS_SIGN_ID' and
      'MSR_MISC_ENABLE' to 'MSR_IA32_MISC_ENABLE', in order to better align
      with the Intel SDM.

Summary of changes:
 sys/dev/virtual/nvmm/x86/nvmm_x86.h     | 100 ++++++++++++++++++++------------
 sys/dev/virtual/nvmm/x86/nvmm_x86_svm.c |  25 +++++---
 sys/dev/virtual/nvmm/x86/nvmm_x86_vmx.c |  40 +++++++++----
 3 files changed, 108 insertions(+), 57 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/df40001a2ee84052443f3eea6678cb86ed17c572


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