linux-kernel - Re: [PATCH] virtio: add VIRTIO_F_NOTIFICATION

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Date:   Tue, 21 Mar 2023 08:11:17 +0800
From:   kernel test robot <lkp@...el.com>
To:     Viktor Prutyanov <viktor@...nix.com>, mst@...hat.com,
        jasowang@...hat.com
Cc:     oe-kbuild-all@...ts.linux.dev,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, yan@...nix.com, viktor@...nix.com
Subject: Re: [PATCH] virtio: add VIRTIO_F_NOTIFICATION_DATA feature support

Hi Viktor,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on mst-vhost/linux-next]
[also build test WARNING on linus/master v6.3-rc3 next-20230320]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Viktor-Prutyanov/virtio-add-VIRTIO_F_NOTIFICATION_DATA-feature-support/20230320-195725
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
patch link:    https://lore.kernel.org/r/20230320115451.1232171-1-viktor%40daynix.com
patch subject: [PATCH] virtio: add VIRTIO_F_NOTIFICATION_DATA feature support
config: sparc64-randconfig-s031-20230319 (https://download.01.org/0day-ci/archive/20230321/202303210740.w7RIuIzb-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/b6212a12ca1691dc346e5de046ec46bd3ce11247
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Viktor-Prutyanov/virtio-add-VIRTIO_F_NOTIFICATION_DATA-feature-support/20230320-195725
        git checkout b6212a12ca1691dc346e5de046ec46bd3ce11247
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/virtio/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303210740.w7RIuIzb-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/virtio/virtio_pci_common.c:54:19: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] l @@     got restricted __le32 [usertype] data @@
   drivers/virtio/virtio_pci_common.c:54:19: sparse:     expected unsigned int [usertype] l
   drivers/virtio/virtio_pci_common.c:54:19: sparse:     got restricted __le32 [usertype] data

vim +54 drivers/virtio/virtio_pci_common.c

    49	
    50	bool vp_notify_with_data(struct virtqueue *vq)
    51	{
    52		__le32 data = vring_fill_notification_data(vq);
    53	
  > 54		iowrite32(data, (void __iomem *)vq->priv);
    55	
    56		return true;
    57	}
    58	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests