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-rw-r--r--tools/testing/selftests/kvm/include/memstress.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/memstress.h b/tools/testing/selftests/kvm/include/memstress.h
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index 000000000000..72e3e358ef7b
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+++ b/tools/testing/selftests/kvm/include/memstress.h
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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 */