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