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// SPDX-License-Identifier: GPL-2.0
/*
* tools/testing/selftests/kvm/include/memstress.h
*
* Copyright (C) 2020, Google LLC.
*/
#ifndef SELFTEST_KVM_MEMSTRESS_H
#define SELFTEST_KVM_MEMSTRESS_H
#include <pthread.h>
#include "kvm_util.h"
/* Default guest test virtual memory offset */
#define DEFAULT_GUEST_TEST_MEM 0xc0000000
#define DEFAULT_PER_VCPU_MEM_SIZE (1 << 30) /* 1G */
#define MEMSTRESS_MEM_SLOT_INDEX 1
struct memstress_vcpu_args {
uint64_t gpa;
uint64_t gva;
uint64_t pages;
/* Only used by the host userspace part of the vCPU thread */
struct kvm_vcpu *vcpu;
int vcpu_idx;
};
struct memstress_args {
struct kvm_vm *vm;
/* The starting address and size of the guest test region. */
uint64_t gpa;
uint64_t size;
uint64_t guest_page_size;
uint32_t random_seed;
uint32_t write_percent;
/* Run vCPUs in L2 instead of L1, if the architecture supports it. */
bool nested;
/* Randomize which pages are accessed by the guest. */
bool random_access;
/* True if all vCPUs are pinned to pCPUs */
bool pin_vcpus;
/* The vCPU=>pCPU pinning map. Only valid if pin_vcpus is true. */
uint32_t vcpu_to_pcpu[KVM_MAX_VCPUS];
/* Test is done, stop running vCPUs. */
bool stop_vcpus;
struct memstress_vcpu_args vcpu_args[KVM_MAX_VCPUS];
};
extern struct memstress_args memstress_args;
struct kvm_vm *memstress_create_vm(enum vm_guest_mode mode, int nr_vcpus,
uint64_t vcpu_memory_bytes, int slots,
enum vm_mem_backing_src_type backing_src,
bool partition_vcpu_memory_access);
void memstress_destroy_vm(struct kvm_vm *vm);
void memstress_set_write_percent(struct kvm_vm *vm, uint32_t write_percent);
void memstress_set_random_seed(struct kvm_vm *vm, uint32_t random_seed);
void memstress_set_random_access(struct kvm_vm *vm, bool random_access);
void memstress_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct memstress_vcpu_args *));
void memstress_join_vcpu_threads(int vcpus);
void memstress_guest_code(uint32_t vcpu_id);
uint64_t memstress_nested_pages(int nr_vcpus);
void memstress_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]);
#endif /* SELFTEST_KVM_MEMSTRESS_H */
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