pds_vdpa: fix up debugfs feature bit printing

Make clearer in debugfs output the difference between the hw
feature bits, the features supported through the driver, and
the features that have been negotiated.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230711042437.69381-6-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

drivers/vdpa/pds/debugfs.c

@@ -176,6 +176,7 @@ static int identity_show(struct seq_file *seq, void *v)
 {
 	struct pds_vdpa_aux *vdpa_aux = seq->private;
 	struct vdpa_mgmt_dev *mgmt;
+	u64 hw_features;
 
 	seq_printf(seq, "aux_dev:            %s\n",
 		   dev_name(&vdpa_aux->padev->aux_dev.dev));
@@ -183,8 +184,9 @@ static int identity_show(struct seq_file *seq, void *v)
 	mgmt = &vdpa_aux->vdpa_mdev;
 	seq_printf(seq, "max_vqs:            %d\n", mgmt->max_supported_vqs);
 	seq_printf(seq, "config_attr_mask:   %#llx\n", mgmt->config_attr_mask);
-	seq_printf(seq, "supported_features: %#llx\n", mgmt->supported_features);
-	print_feature_bits_all(seq, mgmt->supported_features);
+	hw_features = le64_to_cpu(vdpa_aux->ident.hw_features);
+	seq_printf(seq, "hw_features:        %#llx\n", hw_features);
+	print_feature_bits_all(seq, hw_features);
 
 	return 0;
 }
@@ -200,7 +202,6 @@ static int config_show(struct seq_file *seq, void *v)
 {
 	struct pds_vdpa_device *pdsv = seq->private;
 	struct virtio_net_config vc;
-	u64 driver_features;
 	u8 status;
 
 	memcpy_fromio(&vc, pdsv->vdpa_aux->vd_mdev.device,
@@ -223,10 +224,8 @@ static int config_show(struct seq_file *seq, void *v)
 	status = vp_modern_get_status(&pdsv->vdpa_aux->vd_mdev);
 	seq_printf(seq, "dev_status:           %#x\n", status);
 	print_status_bits(seq, status);
-
-	driver_features = vp_modern_get_driver_features(&pdsv->vdpa_aux->vd_mdev);
-	seq_printf(seq, "driver_features:      %#llx\n", driver_features);
-	print_feature_bits_all(seq, driver_features);
+	seq_printf(seq, "negotiated_features:  %#llx\n", pdsv->negotiated_features);
+	print_feature_bits_all(seq, pdsv->negotiated_features);
 	seq_printf(seq, "vdpa_index:           %d\n", pdsv->vdpa_index);
 	seq_printf(seq, "num_vqs:              %d\n", pdsv->num_vqs);