diff options
Diffstat (limited to 'sys/amd64/vmm/x86.c')
| -rw-r--r-- | sys/amd64/vmm/x86.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/amd64/vmm/x86.c b/sys/amd64/vmm/x86.c index 525e1d9..61d99d5 100644 --- a/sys/amd64/vmm/x86.c +++ b/sys/amd64/vmm/x86.c @@ -176,6 +176,9 @@ x86_emulate_cpuid(struct vm *vm, int vcpu_id, /* Don't advertise the OS visible workaround feature */ regs[2] &= ~AMDID2_OSVW; + /* Hide mwaitx/monitorx capability from the guest */ + regs[2] &= ~AMDID2_MWAITX; + /* * Hide rdtscp/ia32_tsc_aux until we know how * to deal with them. |
