diff options
| author | Ben Gardon <bgardon@google.com> | 2022-06-13 21:25:16 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-24 04:51:45 -0400 |
| commit | 4d0a059415708ec0f221616f187853176d2fbebc (patch) | |
| tree | 4e9539e528bc46114e498a08648de4e453da2e74 /tools/testing/selftests/kvm/include/kvm_util_base.h | |
| parent | 32faa0647cea46ffda9095c3a8c95b315e139f0f (diff) | |
KVM: selftests: Read binary stats desc in lib
Move the code to read the binary stats descriptors to the KVM selftests
library. It will be re-used by other tests to check KVM behavior.
No functional change intended.
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20220613212523.3436117-4-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include/kvm_util_base.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/kvm_util_base.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h index 669fe4b400c2..8bce6df5fd40 100644 --- a/tools/testing/selftests/kvm/include/kvm_util_base.h +++ b/tools/testing/selftests/kvm/include/kvm_util_base.h @@ -316,6 +316,31 @@ static inline void read_stats_header(int stats_fd, struct kvm_stats_header *head TEST_ASSERT(ret == sizeof(*header), "Read stats header"); } +struct kvm_stats_desc *read_stats_descriptors(int stats_fd, + struct kvm_stats_header *header); + +static inline ssize_t get_stats_descriptor_size(struct kvm_stats_header *header) +{ + /* + * The base size of the descriptor is defined by KVM's ABI, but the + * size of the name field is variable, as far as KVM's ABI is + * concerned. For a given instance of KVM, the name field is the same + * size for all stats and is provided in the overall stats header. + */ + return sizeof(struct kvm_stats_desc) + header->name_size; +} + +static inline struct kvm_stats_desc *get_stats_descriptor(struct kvm_stats_desc *stats, + int index, + struct kvm_stats_header *header) +{ + /* + * Note, size_desc includes the size of the name field, which is + * variable. i.e. this is NOT equivalent to &stats_desc[i]. + */ + return (void *)stats + index * get_stats_descriptor_size(header); +} + void vm_create_irqchip(struct kvm_vm *vm); void vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags, |