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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2017 Mellanox Technologies, Ltd.
*/
#include "rte_hypervisor.h"
#include <stdint.h>
#include <string.h>
#include "rte_cpuflags.h"
#include "rte_cpuid.h"
/* See http://lwn.net/Articles/301888/ */
#define HYPERVISOR_INFO_LEAF 0x40000000
enum rte_hypervisor
rte_hypervisor_get(void)
{
cpuid_registers_t regs;
int reg;
char name[13];
if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_HYPERVISOR))
return RTE_HYPERVISOR_NONE;
__cpuid(HYPERVISOR_INFO_LEAF,
regs[RTE_REG_EAX], regs[RTE_REG_EBX],
regs[RTE_REG_ECX], regs[RTE_REG_EDX]);
for (reg = 1; reg < 4; reg++)
memcpy(name + (reg - 1) * 4, ®s[reg], 4);
name[12] = '\0';
if (strcmp("KVMKVMKVM", name) == 0)
return RTE_HYPERVISOR_KVM;
if (strcmp("Microsoft Hv", name) == 0)
return RTE_HYPERVISOR_HYPERV;
if (strcmp("VMwareVMware", name) == 0)
return RTE_HYPERVISOR_VMWARE;
return RTE_HYPERVISOR_UNKNOWN;
}
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