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