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/*
* QEMU MSHV support
*
* Copyright Microsoft, Corp. 2025
*
* Authors: Ziqiao Zhou <ziqiaozhou@microsoft.com>
* Magnus Kulke <magnuskulke@microsoft.com>
* Jinank Jain <jinankjain@microsoft.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
*/
#ifndef QEMU_MSHV_INT_H
#define QEMU_MSHV_INT_H
#define MSHV_MSR_ENTRIES_COUNT 64
#define MSHV_MAX_MEM_SLOTS 32
typedef struct hyperv_message hv_message;
typedef struct MshvHvCallArgs {
void *base;
void *input_page;
void *output_page;
} MshvHvCallArgs;
struct AccelCPUState {
int cpufd;
bool dirty;
MshvHvCallArgs hvcall_args;
};
typedef struct MshvMemoryListener {
MemoryListener listener;
int as_id;
} MshvMemoryListener;
typedef struct MshvAddressSpace {
MshvMemoryListener *ml;
AddressSpace *as;
} MshvAddressSpace;
typedef struct MshvMemorySlotManager {
size_t n_slots;
GList *slots;
QemuMutex mutex;
} MshvMemorySlotManager;
struct MshvState {
AccelState parent_obj;
int vm;
MshvMemoryListener memory_listener;
/* number of listeners */
int nr_as;
MshvAddressSpace *as;
int fd;
MshvMemorySlotManager msm;
};
typedef struct MshvMsiControl {
bool updated;
GHashTable *gsi_routes;
} MshvMsiControl;
#define mshv_vcpufd(cpu) (cpu->accel->cpufd)
/* cpu */
typedef struct MshvFPU {
uint8_t fpr[8][16];
uint16_t fcw;
uint16_t fsw;
uint8_t ftwx;
uint8_t pad1;
uint16_t last_opcode;
uint64_t last_ip;
uint64_t last_dp;
uint8_t xmm[16][16];
uint32_t mxcsr;
uint32_t pad2;
} MshvFPU;
typedef enum MshvVmExit {
MshvVmExitIgnore = 0,
MshvVmExitShutdown = 1,
MshvVmExitSpecial = 2,
} MshvVmExit;
typedef enum MshvRemapResult {
MshvRemapOk = 0,
MshvRemapNoMapping = 1,
MshvRemapNoOverlap = 2,
} MshvRemapResult;
void mshv_init_mmio_emu(void);
int mshv_create_vcpu(int vm_fd, uint8_t vp_index, int *cpu_fd);
void mshv_remove_vcpu(int vm_fd, int cpu_fd);
int mshv_configure_vcpu(const CPUState *cpu, const MshvFPU *fpu, uint64_t xcr0);
int mshv_get_standard_regs(CPUState *cpu);
int mshv_get_special_regs(CPUState *cpu);
int mshv_run_vcpu(int vm_fd, CPUState *cpu, hv_message *msg, MshvVmExit *exit);
int mshv_load_regs(CPUState *cpu);
int mshv_store_regs(CPUState *cpu);
int mshv_set_generic_regs(const CPUState *cpu, const hv_register_assoc *assocs,
size_t n_regs);
int mshv_arch_put_registers(const CPUState *cpu);
void mshv_arch_init_vcpu(CPUState *cpu);
void mshv_arch_destroy_vcpu(CPUState *cpu);
void mshv_arch_amend_proc_features(
union hv_partition_synthetic_processor_features *features);
int mshv_arch_post_init_vm(int vm_fd);
#if defined COMPILING_PER_TARGET && defined CONFIG_MSHV_IS_POSSIBLE
int mshv_hvcall(int fd, const struct mshv_root_hvcall *args);
#endif
/* memory */
typedef struct MshvMemorySlot {
uint64_t guest_phys_addr;
uint64_t memory_size;
uint64_t userspace_addr;
bool readonly;
bool mapped;
} MshvMemorySlot;
MshvRemapResult mshv_remap_overlap_region(int vm_fd, uint64_t gpa);
int mshv_guest_mem_read(uint64_t gpa, uint8_t *data, uintptr_t size,
bool is_secure_mode, bool instruction_fetch);
int mshv_guest_mem_write(uint64_t gpa, const uint8_t *data, uintptr_t size,
bool is_secure_mode);
void mshv_set_phys_mem(MshvMemoryListener *mml, MemoryRegionSection *section,
bool add);
void mshv_init_memory_slot_manager(MshvState *mshv_state);
/* msr */
typedef struct MshvMsrEntry {
uint32_t index;
uint32_t reserved;
uint64_t data;
} MshvMsrEntry;
typedef struct MshvMsrEntries {
MshvMsrEntry entries[MSHV_MSR_ENTRIES_COUNT];
uint32_t nmsrs;
} MshvMsrEntries;
int mshv_configure_msr(const CPUState *cpu, const MshvMsrEntry *msrs,
size_t n_msrs);
/* interrupt */
void mshv_init_msicontrol(void);
int mshv_reserve_ioapic_msi_routes(int vm_fd);
#endif
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