fa3899add1
The test calls KVM_RUN repeatedly, and creates an entirely new VM with the old memory and vCPU state on every exit to userspace. The kvm_util API is expanded with two functions that manage the lifetime of a kvm_vm struct: the first closes the file descriptors and leaves the memory allocated, and the second opens the file descriptors and reuses the memory from the previous incarnation of the kvm_vm struct. For now the test is very basic, as it does not test for example XSAVE or vCPU events. However, it will test nested virtualization state starting with the next patch. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
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* tools/testing/selftests/kvm/lib/kvm_util.c
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*
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* Copyright (C) 2018, Google LLC.
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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*/
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#ifndef KVM_UTIL_INTERNAL_H
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#define KVM_UTIL_INTERNAL_H 1
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#include "sparsebit.h"
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#ifndef BITS_PER_BYTE
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#define BITS_PER_BYTE 8
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#endif
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#ifndef BITS_PER_LONG
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#define BITS_PER_LONG (BITS_PER_BYTE * sizeof(long))
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#endif
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_LONG)
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/* Concrete definition of struct kvm_vm. */
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struct userspace_mem_region {
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struct userspace_mem_region *next, *prev;
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struct kvm_userspace_memory_region region;
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struct sparsebit *unused_phy_pages;
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int fd;
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off_t offset;
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void *host_mem;
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void *mmap_start;
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size_t mmap_size;
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};
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struct vcpu {
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struct vcpu *next, *prev;
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uint32_t id;
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int fd;
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struct kvm_run *state;
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};
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struct kvm_vm {
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int mode;
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int kvm_fd;
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int fd;
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unsigned int page_size;
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unsigned int page_shift;
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uint64_t max_gfn;
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struct vcpu *vcpu_head;
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struct userspace_mem_region *userspace_mem_region_head;
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struct sparsebit *vpages_valid;
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struct sparsebit *vpages_mapped;
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bool has_irqchip;
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bool pgd_created;
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vm_paddr_t pgd;
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vm_vaddr_t gdt;
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vm_vaddr_t tss;
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};
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struct vcpu *vcpu_find(struct kvm_vm *vm,
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uint32_t vcpuid);
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void vcpu_setup(struct kvm_vm *vm, int vcpuid, int pgd_memslot, int gdt_memslot);
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void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent);
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void regs_dump(FILE *stream, struct kvm_regs *regs,
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uint8_t indent);
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void sregs_dump(FILE *stream, struct kvm_sregs *sregs,
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uint8_t indent);
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#endif
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