/* * Common hypervisor code * * Copyright (C) 2008, VMware, Inc. * Author : Alok N Kataria <akataria@vmware.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT.  See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * */ #include <linux/module.h>#include <asm/processor.h>#include <asm/hypervisor.h> /* * Hypervisor detect order.  This is specified explicitly here because * some hypervisors might implement compatibility modes for other * hypervisors and therefore need to be detected in specific sequence. */static const __initconst struct hypervisor_x86 * const hypervisors[] ={#ifdef CONFIG_XEN_PVHVM	&x86_hyper_xen_hvm,#endif	&x86_hyper_vmware,	&x86_hyper_ms_hyperv,}; const struct hypervisor_x86 *x86_hyper;EXPORT_SYMBOL(x86_hyper); static inline void __initdetect_hypervisor_vendor(void){	const struct hypervisor_x86 *h, * const *p; 	for (p = hypervisors; p < hypervisors + ARRAY_SIZE(hypervisors); p++) {		h = *p;		if (h->detect()) {			x86_hyper = h;			printk(KERN_INFO "Hypervisor detected: %s\n", h->name);			break;		}	}} void __cpuinit init_hypervisor(struct cpuinfo_x86 *c){	if (x86_hyper && x86_hyper->set_cpu_features)		x86_hyper->set_cpu_features(c);} void __init init_hypervisor_platform(void){ 	detect_hypervisor_vendor(); 	if (!x86_hyper)		return; 	init_hypervisor(&boot_cpu_data); 	if (x86_hyper->init_platform)		x86_hyper->init_platform();}