kvm: selftests: add API testing infrastructure

Testsuite contributed by Google and cleaned up by myself for
inclusion in Linux.

Signed-off-by: Ken Hofsass <hofsass@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 139 insertions, 0 deletions

diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
new file mode 100644
index 000000000000..d2e3e23bfbd3
--- /dev/null
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -0,0 +1,139 @@
+/*
+ * 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);
+
+int kvm_memcmp_hva_gva(void *hva,
+        struct kvm_vm *vm, const vm_vaddr_t gva, size_t len);
+
+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);
+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);
+
+void kvm_get_supported_cpuid(struct kvm_cpuid2 *cpuid);
+void vcpu_set_cpuid(
+        struct kvm_vm *vm, uint32_t vcpuid, struct kvm_cpuid2 *cpuid);
+
+struct kvm_cpuid2 *allocate_kvm_cpuid2(void);
+struct kvm_cpuid_entry2 *
+find_cpuid_index_entry(struct kvm_cpuid2 *cpuid, uint32_t function,
+                       uint32_t index);
+
+static inline struct kvm_cpuid_entry2 *
+find_cpuid_entry(struct kvm_cpuid2 *cpuid, uint32_t function)
+{
+        return find_cpuid_index_entry(cpuid, 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);
+
+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);
+
+#endif /* SELFTEST_KVM_UTIL_H */