/* * tools/testing/selftests/kvm/include/kvm_util.h * * Copyright (C) 2018, Google LLC. * * This work is licensed under the terms of the GNU GPL, version 2. * */ #ifndef SELFTEST_KVM_UTIL_H #define SELFTEST_KVM_UTIL_H 1 #include "test_util.h" #include "asm/kvm.h" #include "linux/kvm.h" #include #include "sparsebit.h" /* * Memslots can't cover the gfn starting at this gpa otherwise vCPUs can't be * created. Only applies to VMs using EPT. */ #define KVM_DEFAULT_IDENTITY_MAP_ADDRESS 0xfffbc000ul /* Callers of kvm_util only have an incomplete/opaque description of the * structure kvm_util is using to maintain the state of a VM. */ struct kvm_vm; typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */ typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */ /* Minimum allocated guest virtual and physical addresses */ #define KVM_UTIL_MIN_VADDR 0x2000 #define DEFAULT_GUEST_PHY_PAGES 512 #define DEFAULT_GUEST_STACK_VADDR_MIN 0xab6000 #define DEFAULT_STACK_PGS 5 enum vm_guest_mode { VM_MODE_FLAT48PG, }; enum vm_mem_backing_src_type { VM_MEM_SRC_ANONYMOUS, VM_MEM_SRC_ANONYMOUS_THP, VM_MEM_SRC_ANONYMOUS_HUGETLB, }; int kvm_check_cap(long cap); struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm); void kvm_vm_free(struct kvm_vm *vmp); void kvm_vm_restart(struct kvm_vm *vmp, int perm); void kvm_vm_release(struct kvm_vm *vmp); void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log); int kvm_memcmp_hva_gva(void *hva, struct kvm_vm *vm, const vm_vaddr_t gva, size_t len); void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename, uint32_t data_memslot, uint32_t pgd_memslot); void vm_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent); void vm_create_irqchip(struct kvm_vm *vm); void vm_userspace_mem_region_add(struct kvm_vm *vm, enum vm_mem_backing_src_type src_type, uint64_t guest_paddr, uint32_t slot, uint64_t npages, uint32_t flags); void vcpu_ioctl(struct kvm_vm *vm, uint32_t vcpuid, unsigned long ioctl, void *arg); void vm_ioctl(struct kvm_vm *vm, unsigned long ioctl, void *arg); void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags); void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_memslot); vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min, uint32_t data_memslot, uint32_t pgd_memslot); void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, size_t size, uint32_t pgd_memslot); void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa); void *addr_gva2hva(struct kvm_vm *vm, vm_vaddr_t gva); vm_paddr_t addr_hva2gpa(struct kvm_vm *vm, void *hva); vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva); struct kvm_run *vcpu_state(struct kvm_vm *vm, uint32_t vcpuid); void vcpu_run(struct kvm_vm *vm, uint32_t vcpuid); int _vcpu_run(struct kvm_vm *vm, uint32_t vcpuid); void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_mp_state *mp_state); void vcpu_regs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs); void vcpu_regs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs); void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...); void vcpu_sregs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs); void vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs); int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs); void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_vcpu_events *events); void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_vcpu_events *events); const char *exit_reason_str(unsigned int exit_reason); void virt_pgd_alloc(struct kvm_vm *vm, uint32_t pgd_memslot); void virt_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, uint32_t pgd_memslot); vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min, uint32_t memslot); struct kvm_cpuid2 *kvm_get_supported_cpuid(void); void vcpu_set_cpuid( struct kvm_vm *vm, uint32_t vcpuid, struct kvm_cpuid2 *cpuid); struct kvm_cpuid_entry2 * kvm_get_supported_cpuid_index(uint32_t function, uint32_t index); static inline struct kvm_cpuid_entry2 * kvm_get_supported_cpuid_entry(uint32_t function) { return kvm_get_supported_cpuid_index(function, 0); } struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_size, void *guest_code); void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code); typedef void (*vmx_guest_code_t)(vm_vaddr_t vmxon_vaddr, vm_paddr_t vmxon_paddr, vm_vaddr_t vmcs_vaddr, vm_paddr_t vmcs_paddr); struct kvm_userspace_memory_region * kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start, uint64_t end); struct kvm_dirty_log * allocate_kvm_dirty_log(struct kvm_userspace_memory_region *region); int vm_create_device(struct kvm_vm *vm, struct kvm_create_device *cd); #define GUEST_PORT_SYNC 0x1000 #define GUEST_PORT_ABORT 0x1001 #define GUEST_PORT_DONE 0x1002 static inline void __exit_to_l0(uint16_t port, uint64_t arg0, uint64_t arg1) { __asm__ __volatile__("in %[port], %%al" : : [port]"d"(port), "D"(arg0), "S"(arg1) : "rax"); } /* * Allows to pass three arguments to the host: port is 16bit wide, * arg0 & arg1 are 64bit wide */ #define GUEST_SYNC_ARGS(_port, _arg0, _arg1) \ __exit_to_l0(_port, (uint64_t) (_arg0), (uint64_t) (_arg1)) #define GUEST_ASSERT(_condition) do { \ if (!(_condition)) \ GUEST_SYNC_ARGS(GUEST_PORT_ABORT, \ "Failed guest assert: " \ #_condition, __LINE__); \ } while (0) #define GUEST_SYNC(stage) GUEST_SYNC_ARGS(GUEST_PORT_SYNC, "hello", stage) #define GUEST_DONE() GUEST_SYNC_ARGS(GUEST_PORT_DONE, 0, 0) struct guest_args { uint64_t arg0; uint64_t arg1; uint16_t port; } __attribute__ ((packed)); void guest_args_read(struct kvm_vm *vm, uint32_t vcpu_id, struct guest_args *args); #endif /* SELFTEST_KVM_UTIL_H */