6 /* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It
7 * should be used to determine that a VM is running under KVM.
9 #define KVM_CPUID_SIGNATURE 0x40000000
11 static inline int kvm_para_available(void)
13 unsigned int eax, ebx, ecx, edx;
16 cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx);
17 memcpy(signature + 0, &ebx, 4);
18 memcpy(signature + 4, &ecx, 4);
19 memcpy(signature + 8, &edx, 4);
22 if (strcmp(signature, "KVMKVMKVM") == 0)
28 #define QEMU_CFG_SIGNATURE 0x00
29 #define QEMU_CFG_ID 0x01
30 #define QEMU_CFG_UUID 0x02
31 #define QEMU_CFG_NUMA 0x0d
32 #define QEMU_CFG_BOOT_MENU 0x0e
33 #define QEMU_CFG_MAX_CPUS 0x0f
34 #define QEMU_CFG_FILE_DIR 0x19
35 #define QEMU_CFG_ARCH_LOCAL 0x8000
36 #define QEMU_CFG_ACPI_TABLES (QEMU_CFG_ARCH_LOCAL + 0)
37 #define QEMU_CFG_SMBIOS_ENTRIES (QEMU_CFG_ARCH_LOCAL + 1)
38 #define QEMU_CFG_IRQ0_OVERRIDE (QEMU_CFG_ARCH_LOCAL + 2)
40 extern int qemu_cfg_present;
42 void qemu_cfg_port_probe(void);
43 int qemu_cfg_show_boot_menu(void);
44 void qemu_cfg_get_uuid(u8 *uuid);
45 int qemu_cfg_irq0_override(void);
46 u16 qemu_cfg_acpi_additional_tables(void);
47 u16 qemu_cfg_next_acpi_table_len(void);
48 void *qemu_cfg_next_acpi_table_load(void *addr, u16 len);
49 u16 qemu_cfg_smbios_entries(void);
50 size_t qemu_cfg_smbios_load_field(int type, size_t offset, void *addr);
51 int qemu_cfg_smbios_load_external(int type, char **p, unsigned *nr_structs,
52 unsigned *max_struct_size, char *end);
53 int qemu_cfg_get_numa_nodes(void);
54 void qemu_cfg_get_numa_data(u64 *data, int n);
55 u16 qemu_cfg_get_max_cpus(void);
57 typedef struct QemuCfgFile {
58 u32 size; /* file size */
59 u16 select; /* write this to 0x510 to read it */
64 u16 qemu_cfg_first_file(QemuCfgFile *entry);
65 u16 qemu_cfg_next_file(QemuCfgFile *entry);
66 u32 qemu_cfg_read_file(QemuCfgFile *entry, void *dst, u32 maxlen);