Function vmcs_snapshot_reg

freebsd/amd64/vmm/intel/vmcs.c:468–494

}

int
vmcs_snapshot_reg(struct vmcs *vmcs, int running, int ident,
		  struct vm_snapshot_meta *meta)
{
	int ret;
	uint64_t val;

	if (meta->op == VM_SNAPSHOT_SAVE) {
		ret = vmcs_getreg(vmcs, running, ident, &val);
		if (ret != 0)
			goto done;

		SNAPSHOT_VAR_OR_LEAVE(val, meta, ret, done);
	} else if (meta->op == VM_SNAPSHOT_RESTORE) {
		SNAPSHOT_VAR_OR_LEAVE(val, meta, ret, done);

		ret = vmcs_setreg(vmcs, running, ident, val);
		if (ret != 0)
			goto done;
	} else {
		ret = EINVAL;
		goto done;
	}

done:
	return (ret);
}

int
vmcs_snapshot_desc(struct vmcs *vmcs, int running, int seg,