diff mbox series

[v9,02/10] KVM: selftests: Read binary stats header in lib

Message ID 20220613212523.3436117-3-bgardon@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: x86: Add a cap to disable NX hugepages on a VM | expand

Commit Message

Ben Gardon June 13, 2022, 9:25 p.m. UTC 
Move the code to read the binary stats header 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>
---
 tools/testing/selftests/kvm/include/kvm_util_base.h | 8 ++++++++
 tools/testing/selftests/kvm/kvm_binary_stats_test.c | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index cdaea2383543..3d3dd144f427 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -303,6 +303,14 @@  static inline int vm_get_stats_fd(struct kvm_vm *vm)
 	return fd;
 }
 
+static inline void read_stats_header(int stats_fd, struct kvm_stats_header *header)
+{
+	ssize_t ret;
+
+	ret = read(stats_fd, header, sizeof(*header));
+	TEST_ASSERT(ret == sizeof(*header), "Read stats 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,
diff --git a/tools/testing/selftests/kvm/kvm_binary_stats_test.c b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
index ae48d4153f85..64db17faacd2 100644
--- a/tools/testing/selftests/kvm/kvm_binary_stats_test.c
+++ b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
@@ -33,8 +33,8 @@  static void stats_test(int stats_fd)
 	struct kvm_stats_desc *pdesc;
 
 	/* Read kvm stats header */
-	ret = read(stats_fd, &header, sizeof(header));
-	TEST_ASSERT(ret == sizeof(header), "Read stats header");
+	read_stats_header(stats_fd, &header);
+
 	size_desc = sizeof(*stats_desc) + header.name_size;
 
 	/* Read kvm stats id string */