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/*
* 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 <sys/ioctl.h>
#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);
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 *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, 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 */
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