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13bbc70329
Copy perf_test_args to the guest during VM creation instead of relying on the caller to do so at their leisure. Ideally, tests wouldn't even be able to modify perf_test_args, i.e. they would have no motivation to do the sync, but enforcing that is arguably a net negative for readability. No functional change intended. [Set wr_fract=1 by default and add helper to override it since the new access_tracking_perf_test needs to set it dynamically.] Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20211111000310.1435032-13-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* tools/testing/selftests/kvm/include/perf_test_util.h
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*
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* Copyright (C) 2020, Google LLC.
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*/
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#ifndef SELFTEST_KVM_PERF_TEST_UTIL_H
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#define SELFTEST_KVM_PERF_TEST_UTIL_H
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#include "kvm_util.h"
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/* Default guest test virtual memory offset */
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#define DEFAULT_GUEST_TEST_MEM 0xc0000000
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#define DEFAULT_PER_VCPU_MEM_SIZE (1 << 30) /* 1G */
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#define PERF_TEST_MEM_SLOT_INDEX 1
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struct perf_test_vcpu_args {
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uint64_t gpa;
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uint64_t gva;
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uint64_t pages;
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/* Only used by the host userspace part of the vCPU thread */
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int vcpu_id;
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};
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struct perf_test_args {
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struct kvm_vm *vm;
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uint64_t gpa;
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uint64_t guest_page_size;
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int wr_fract;
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struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
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};
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extern struct perf_test_args perf_test_args;
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struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
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uint64_t vcpu_memory_bytes, int slots,
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enum vm_mem_backing_src_type backing_src,
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bool partition_vcpu_memory_access);
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void perf_test_destroy_vm(struct kvm_vm *vm);
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void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract);
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#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */
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