/*
* 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/init.h>
#include <linux/export.h>
#include <asm /processor.h>
#include <asm /hypervisor.h>
static const __initconst struct hypervisor_x86 * const hypervisors[] =
{
#ifdef CONFIG_XEN_PV
&x86_hyper_xen_pv,
#endif
#ifdef CONFIG_XEN_PVHVM
&x86_hyper_xen_hvm,
#endif
&x86_hyper_vmware,
&x86_hyper_ms_hyperv,
#ifdef CONFIG_KVM_GUEST
&x86_hyper_kvm,
#endif
#ifdef CONFIG_JAILHOUSE_GUEST
&x86_hyper_jailhouse,
#endif
#ifdef CONFIG_ACRN_GUEST
&x86_hyper_acrn,
#endif
};
enum x86_hypervisor_type x86_hyper_type;
EXPORT_SYMBOL(x86_hyper_type);
bool __initdata nopv;
static __init int parse_nopv(char *arg)
{
nopv = true ;
return 0 ;
}
early_param("nopv" , parse_nopv);
static inline const struct hypervisor_x86 * __init
detect_hypervisor_vendor(void )
{
const struct hypervisor_x86 *h = NULL, * const *p;
uint32_t pri, max_pri = 0 ;
for (p = hypervisors; p < hypervisors + ARRAY_SIZE(hypervisors); p++) {
if (unlikely(nopv) && !(*p)->ignore_nopv)
continue ;
pri = (*p)->detect();
if (pri > max_pri) {
max_pri = pri;
h = *p;
}
}
if (h)
pr_info("Hypervisor detected: %s\n" , h->name);
return h;
}
static void __init copy_array(const void *src, void *target, unsigned int size)
{
unsigned int i, n = size / sizeof (void *);
const void * const *from = (const void * const *)src;
const void **to = (const void **)target;
for (i = 0 ; i < n; i++)
if (from[i])
to[i] = from[i];
}
void __init init_hypervisor_platform(void )
{
const struct hypervisor_x86 *h;
h = detect_hypervisor_vendor();
if (!h)
return ;
copy_array(&h->init, &x86_init.hyper, sizeof (h->init));
copy_array(&h->runtime, &x86_platform.hyper, sizeof (h->runtime));
x86_hyper_type = h->type;
x86_init.hyper.init_platform();
}
Messung V0.5 in Prozent C=100 H=87 G=93
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-01)
¤
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