projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 11fdf7f2 TL |
1 | /* SPDX-License-Identifier: BSD-3-Clause |
| 2 | * Copyright 2017 Mellanox Technologies, Ltd | |
| 3 | */ | |
| 4 | ||
| 5 | #include "rte_hypervisor.h" | |
| 6 | ||
| 7 | #include <stdint.h> | |
| 8 | #include <string.h> | |
| 9 | ||
| 10 | #include "rte_cpuflags.h" | |
| 11 | #include "rte_cpuid.h" | |
| 12 | ||
| 13 | /* See http://lwn.net/Articles/301888/ */ | |
| 14 | #define HYPERVISOR_INFO_LEAF 0x40000000 | |
| 15 | ||
| 16 | enum rte_hypervisor | |
| 17 | rte_hypervisor_get(void) | |
| 18 | { | |
| 19 | cpuid_registers_t regs; | |
| 20 | int reg; | |
| 21 | char name[13]; | |
| 22 | ||
| 23 | if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_HYPERVISOR)) | |
| 24 | return RTE_HYPERVISOR_NONE; | |
| 25 | ||
| 26 | __cpuid(HYPERVISOR_INFO_LEAF, | |
| 27 | regs[RTE_REG_EAX], regs[RTE_REG_EBX], | |
| 28 | regs[RTE_REG_ECX], regs[RTE_REG_EDX]); | |
| 29 | for (reg = 1; reg < 4; reg++) | |
| 30 | memcpy(name + (reg - 1) * 4, ®s[reg], 4); | |
| 31 | name[12] = '\0'; | |
| 32 | ||
| 33 | if (strcmp("KVMKVMKVM", name) == 0) | |
| 34 | return RTE_HYPERVISOR_KVM; | |
| 35 | if (strcmp("Microsoft Hv", name) == 0) | |
| 36 | return RTE_HYPERVISOR_HYPERV; | |
| 37 | if (strcmp("VMwareVMware", name) == 0) | |
| 38 | return RTE_HYPERVISOR_VMWARE; | |
| 39 | return RTE_HYPERVISOR_UNKNOWN; | |
| 40 | } |