Re: [RFC PATCH v2 4/5] vfio/pci: Invalidate mmaps and block the access in D3hot power state

[kernel test robot <lkp@intel.com>]

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Hi Abhishek,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on awilliam-vfio/next]
[also build test WARNING on v5.17-rc1 next-20220124]
[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/0day-ci/linux/commits/Abhishek-Sahu/vfio-pci-Enable-runtime-power-management-support/20220125-021827
base:   https://github.com/awilliam/linux-vfio.git next
config: x86_64-randconfig-s022-20220124 (https://download.01.org/0day-ci/archive/20220125/202201251024.DoqLcJkP-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/0day-ci/linux/commit/84afeb78e3ae55e0f1c1f84d42e28c60585fdc48
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Abhishek-Sahu/vfio-pci-Enable-runtime-power-management-support/20220125-021827
        git checkout 84afeb78e3ae55e0f1c1f84d42e28c60585fdc48
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/vfio/pci/ mm/kasan/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/vfio/pci/vfio_pci_rdwr.c:64:1: sparse: sparse: restricted pci_power_t degrades to integer
>> drivers/vfio/pci/vfio_pci_rdwr.c:64:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:65:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:65:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:66:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:66:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:95:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:95:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:96:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:96:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:97:1: sparse: sparse: restricted pci_power_t degrades to integer
   drivers/vfio/pci/vfio_pci_rdwr.c:97:1: sparse: sparse: restricted pci_power_t degrades to integer

vim +64 drivers/vfio/pci/vfio_pci_rdwr.c

bc93b9ae0151ae Alex Williamson 2020-08-17  63  
bc93b9ae0151ae Alex Williamson 2020-08-17 @64  VFIO_IOWRITE(8)
bc93b9ae0151ae Alex Williamson 2020-08-17  65  VFIO_IOWRITE(16)
bc93b9ae0151ae Alex Williamson 2020-08-17  66  VFIO_IOWRITE(32)
bc93b9ae0151ae Alex Williamson 2020-08-17  67  #ifdef iowrite64
bc93b9ae0151ae Alex Williamson 2020-08-17  68  VFIO_IOWRITE(64)
bc93b9ae0151ae Alex Williamson 2020-08-17  69  #endif
bc93b9ae0151ae Alex Williamson 2020-08-17  70  

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org