Re: [PATCH v3 3/4] vhost-vdpa: uAPI to stop the device

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Hi "Eugenio,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on mst-vhost/linux-next]
[also build test ERROR on next-20220525]
[cannot apply to horms-ipvs/master linux/master linus/master v5.18]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Eugenio-P-rez/Implement-vdpasim-stop-operation/20220525-190143
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220526/202205260121.6V500tTl-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d52a6e75b0c402c7f3b42a2b1b2873f151220947)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/515f6b6d2a0164df801ddbe61e1cb1ae4e763873
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Eugenio-P-rez/Implement-vdpasim-stop-operation/20220525-190143
        git checkout 515f6b6d2a0164df801ddbe61e1cb1ae4e763873
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/vhost/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

>> drivers/vhost/vdpa.c:668:7: error: use of undeclared identifier 'VHOST_STOP'
           case VHOST_STOP:
                ^
   1 error generated.


vim +/VHOST_STOP +668 drivers/vhost/vdpa.c

   587	
   588	static long vhost_vdpa_unlocked_ioctl(struct file *filep,
   589					      unsigned int cmd, unsigned long arg)
   590	{
   591		struct vhost_vdpa *v = filep->private_data;
   592		struct vhost_dev *d = &v->vdev;
   593		void __user *argp = (void __user *)arg;
   594		u64 __user *featurep = argp;
   595		u64 features;
   596		long r = 0;
   597	
   598		if (cmd == VHOST_SET_BACKEND_FEATURES) {
   599			if (copy_from_user(&features, featurep, sizeof(features)))
   600				return -EFAULT;
   601			if (features & ~(VHOST_VDPA_BACKEND_FEATURES |
   602					 BIT_ULL(VHOST_BACKEND_F_STOP)))
   603				return -EOPNOTSUPP;
   604			if ((features & BIT_ULL(VHOST_BACKEND_F_STOP)) &&
   605			     !vhost_vdpa_can_stop(v))
   606				return -EOPNOTSUPP;
   607			vhost_set_backend_features(&v->vdev, features);
   608			return 0;
   609		}
   610	
   611		mutex_lock(&d->mutex);
   612	
   613		switch (cmd) {
   614		case VHOST_VDPA_GET_DEVICE_ID:
   615			r = vhost_vdpa_get_device_id(v, argp);
   616			break;
   617		case VHOST_VDPA_GET_STATUS:
   618			r = vhost_vdpa_get_status(v, argp);
   619			break;
   620		case VHOST_VDPA_SET_STATUS:
   621			r = vhost_vdpa_set_status(v, argp);
   622			break;
   623		case VHOST_VDPA_GET_CONFIG:
   624			r = vhost_vdpa_get_config(v, argp);
   625			break;
   626		case VHOST_VDPA_SET_CONFIG:
   627			r = vhost_vdpa_set_config(v, argp);
   628			break;
   629		case VHOST_GET_FEATURES:
   630			r = vhost_vdpa_get_features(v, argp);
   631			break;
   632		case VHOST_SET_FEATURES:
   633			r = vhost_vdpa_set_features(v, argp);
   634			break;
   635		case VHOST_VDPA_GET_VRING_NUM:
   636			r = vhost_vdpa_get_vring_num(v, argp);
   637			break;
   638		case VHOST_VDPA_GET_GROUP_NUM:
   639			r = copy_to_user(argp, &v->vdpa->ngroups,
   640					 sizeof(v->vdpa->ngroups));
   641			break;
   642		case VHOST_VDPA_GET_AS_NUM:
   643			r = copy_to_user(argp, &v->vdpa->nas, sizeof(v->vdpa->nas));
   644			break;
   645		case VHOST_SET_LOG_BASE:
   646		case VHOST_SET_LOG_FD:
   647			r = -ENOIOCTLCMD;
   648			break;
   649		case VHOST_VDPA_SET_CONFIG_CALL:
   650			r = vhost_vdpa_set_config_call(v, argp);
   651			break;
   652		case VHOST_GET_BACKEND_FEATURES:
   653			features = VHOST_VDPA_BACKEND_FEATURES;
   654			if (vhost_vdpa_can_stop(v))
   655				features |= BIT_ULL(VHOST_BACKEND_F_STOP);
   656			if (copy_to_user(featurep, &features, sizeof(features)))
   657				r = -EFAULT;
   658			break;
   659		case VHOST_VDPA_GET_IOVA_RANGE:
   660			r = vhost_vdpa_get_iova_range(v, argp);
   661			break;
   662		case VHOST_VDPA_GET_CONFIG_SIZE:
   663			r = vhost_vdpa_get_config_size(v, argp);
   664			break;
   665		case VHOST_VDPA_GET_VQS_COUNT:
   666			r = vhost_vdpa_get_vqs_count(v, argp);
   667			break;
 > 668		case VHOST_STOP:
   669			r = vhost_vdpa_stop(v, argp);
   670			break;
   671		default:
   672			r = vhost_dev_ioctl(&v->vdev, cmd, argp);
   673			if (r == -ENOIOCTLCMD)
   674				r = vhost_vdpa_vring_ioctl(v, cmd, argp);
   675			break;
   676		}
   677	
   678		mutex_unlock(&d->mutex);
   679		return r;
   680	}
   681	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp
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