CVS commit: src/sys/dev/nvmm/x86

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Fri Sep  4 17:07:33 UTC 2020

Modified Files:
        src/sys/dev/nvmm/x86: nvmm_x86_vmx.c

Log Message:
nvmm-x86-vmx: improve the handling of CR0

 - Flush the guest TLB when certain CR0 bits change.
 - If the guest updates a static bit in CR0, then reflect the change in
   VMCS_CR0_SHADOW, for the guest to get the illusion that the change was
   applied. The "real" CR0 static bits remain unchanged.
 - In vmx_vcpu_{g,s}et_state(), take VMCS_CR0_SHADOW into account.
 - Slightly modify the CR4 handling code, just for more symmetry with CR0.


To generate a diff of this commit:
cvs rdiff -u -r1.74 -r1.75 src/sys/dev/nvmm/x86/nvmm_x86_vmx.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.