void
fbsdrun_set_capabilities(struct vmctx *ctx, int cpu)
{
int err, tmp;
if (fbsdrun_vmexit_on_hlt()) {
err = vm_get_capability(ctx, cpu, VM_CAP_HALT_EXIT, &tmp);
if (err < 0) {
fprintf(stderr, "VM exit on HLT not supported\n");
exit(1);
}
vm_set_capability(ctx, cpu, VM_CAP_HALT_EXIT, 1);
if (cpu == BSP)
handler[VM_EXITCODE_HLT] = vmexit_hlt;
}
if (fbsdrun_vmexit_on_pause()) {
/*
* pause exit support required for this mode
*/
err = vm_get_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, &tmp);
if (err < 0) {
fprintf(stderr,
"SMP mux requested, no pause support\n");
exit(1);
}
vm_set_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, 1);
if (cpu == BSP)
handler[VM_EXITCODE_PAUSE] = vmexit_pause;
}
if (fbsdrun_disable_x2apic())
err = vm_set_x2apic_state(ctx, cpu, X2APIC_DISABLED);
else
err = vm_set_x2apic_state(ctx, cpu, X2APIC_ENABLED);
if (err) {
fprintf(stderr, "Unable to set x2apic state (%d)\n", err);
exit(1);
}
vm_set_capability(ctx, cpu, VM_CAP_ENABLE_INVPCID, 1);
}
int
spinup_ap(struct vmctx *ctx, int vcpu, int newcpu, uint64_t rip)
{
int error;
assert(newcpu != 0);
assert(newcpu < guest_ncpus);
error = vcpu_reset(ctx, newcpu);
assert(error == 0);
/* Set up capabilities */
if (fbsdrun_vmexit_on_hlt()) {
error = vm_set_capability(ctx, newcpu, VM_CAP_HALT_EXIT, 1);
assert(error == 0);
}
if (fbsdrun_vmexit_on_pause()) {
error = vm_set_capability(ctx, newcpu, VM_CAP_PAUSE_EXIT, 1);
assert(error == 0);
}
if (fbsdrun_disable_x2apic())
error = vm_set_x2apic_state(ctx, newcpu, X2APIC_DISABLED);
else
error = vm_set_x2apic_state(ctx, newcpu, X2APIC_ENABLED);
assert(error == 0);
/*
* Enable the 'unrestricted guest' mode for 'newcpu'.
*
* Set up the processor state in power-on 16-bit mode, with the CS:IP
* init'd to the specified low-mem 4K page.
*/
error = vm_set_capability(ctx, newcpu, VM_CAP_UNRESTRICTED_GUEST, 1);
assert(error == 0);
spinup_ap_realmode(ctx, newcpu, &rip);
fbsdrun_addcpu(ctx, newcpu, rip);
return (newcpu);
}
