eb5618911a
KVM/arm64 updates for 6.2 - Enable the per-vcpu dirty-ring tracking mechanism, together with an option to keep the good old dirty log around for pages that are dirtied by something other than a vcpu. - Switch to the relaxed parallel fault handling, using RCU to delay page table reclaim and giving better performance under load. - Relax the MTE ABI, allowing a VMM to use the MAP_SHARED mapping option, which multi-process VMMs such as crosvm rely on. - Merge the pKVM shadow vcpu state tracking that allows the hypervisor to have its own view of a vcpu, keeping that state private. - Add support for the PMUv3p5 architecture revision, bringing support for 64bit counters on systems that support it, and fix the no-quite-compliant CHAIN-ed counter support for the machines that actually exist out there. - Fix a handful of minor issues around 52bit VA/PA support (64kB pages only) as a prefix of the oncoming support for 4kB and 16kB pages. - Add/Enable/Fix a bunch of selftests covering memslots, breakpoints, stage-2 faults and access tracking. You name it, we got it, we probably broke it. - Pick a small set of documentation and spelling fixes, because no good merge window would be complete without those. As a side effect, this tag also drags: - The 'kvmarm-fixes-6.1-3' tag as a dependency to the dirty-ring series - A shared branch with the arm64 tree that repaints all the system registers to match the ARM ARM's naming, and resulting in interesting conflicts
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* tools/testing/selftests/kvm/include/memstress.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_MEMSTRESS_H
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#define SELFTEST_KVM_MEMSTRESS_H
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#include <pthread.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 MEMSTRESS_MEM_SLOT_INDEX 1
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struct memstress_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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struct kvm_vcpu *vcpu;
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int vcpu_idx;
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};
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struct memstress_args {
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struct kvm_vm *vm;
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/* The starting address and size of the guest test region. */
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uint64_t gpa;
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uint64_t size;
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uint64_t guest_page_size;
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uint32_t random_seed;
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uint32_t write_percent;
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/* Run vCPUs in L2 instead of L1, if the architecture supports it. */
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bool nested;
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/* Randomize which pages are accessed by the guest. */
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bool random_access;
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/* True if all vCPUs are pinned to pCPUs */
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bool pin_vcpus;
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/* The vCPU=>pCPU pinning map. Only valid if pin_vcpus is true. */
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uint32_t vcpu_to_pcpu[KVM_MAX_VCPUS];
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/* Test is done, stop running vCPUs. */
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bool stop_vcpus;
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struct memstress_vcpu_args vcpu_args[KVM_MAX_VCPUS];
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};
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extern struct memstress_args memstress_args;
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struct kvm_vm *memstress_create_vm(enum vm_guest_mode mode, int nr_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 memstress_destroy_vm(struct kvm_vm *vm);
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void memstress_set_write_percent(struct kvm_vm *vm, uint32_t write_percent);
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void memstress_set_random_seed(struct kvm_vm *vm, uint32_t random_seed);
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void memstress_set_random_access(struct kvm_vm *vm, bool random_access);
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void memstress_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct memstress_vcpu_args *));
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void memstress_join_vcpu_threads(int vcpus);
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void memstress_guest_code(uint32_t vcpu_id);
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uint64_t memstress_nested_pages(int nr_vcpus);
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void memstress_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]);
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#endif /* SELFTEST_KVM_MEMSTRESS_H */
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