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27 May 2022 22:10:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,258,1647327600"; d="scan'208";a="902820340" Received: from lkp-server01.sh.intel.com (HELO db63a1be7222) ([10.239.97.150]) by fmsmga005.fm.intel.com with ESMTP; 27 May 2022 22:10:41 -0700 Received: from kbuild by db63a1be7222 with local (Exim 4.95) (envelope-from ) id 1nuoin-0005V1-5u; Sat, 28 May 2022 05:10:41 +0000 Date: Sat, 28 May 2022 13:10:08 +0800 From: kernel test robot To: Abhishek Sahu Cc: kbuild-all@lists.01.org, Linux Memory Management List , Alex Williamson Subject: [linux-next:master 11904/14198] drivers/vfio/pci/vfio_pci_config.c:411:20: sparse: sparse: restricted pci_power_t degrades to integer Message-ID: <202205281333.Mw1XyMXP-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspam-User: X-Rspamd-Queue-Id: 39B9080048 X-Stat-Signature: fm5thg7huoucjzdydqrwme7wyd4teh33 Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=PoER2qJq; spf=none (imf30.hostedemail.com: domain of lkp@intel.com has no SPF policy when checking 134.134.136.126) smtp.mailfrom=lkp@intel.com; dmarc=pass (policy=none) header.from=intel.com X-Rspamd-Server: rspam09 X-HE-Tag: 1653714615-177504 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d3fde8ff50ab265749704bd7fbcf70d35235421f commit: 2b2c651baf1c24414be4f76b152de80fae7c7786 [11904/14198] vfio/pci: Invalidate mmaps and block the access in D3hot power state config: csky-randconfig-s032-20220524 (https://download.01.org/0day-ci/archive/20220528/202205281333.Mw1XyMXP-lkp@intel.com/config) compiler: csky-linux-gcc (GCC) 11.3.0 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: v0.6.4-14-g5a0004b5-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=2b2c651baf1c24414be4f76b152de80fae7c7786 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 2b2c651baf1c24414be4f76b152de80fae7c7786 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=csky SHELL=/bin/bash drivers/vfio/pci/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> drivers/vfio/pci/vfio_pci_config.c:411:20: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_config.c:411:38: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_config.c:705:13: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_config.c:705:22: sparse: sparse: restricted pci_power_t degrades to integer vim +411 drivers/vfio/pci/vfio_pci_config.c 397 398 /* Caller should hold memory_lock semaphore */ 399 bool __vfio_pci_memory_enabled(struct vfio_pci_core_device *vdev) 400 { 401 struct pci_dev *pdev = vdev->pdev; 402 u16 cmd = le16_to_cpu(*(__le16 *)&vdev->vconfig[PCI_COMMAND]); 403 404 /* 405 * Memory region cannot be accessed if device power state is D3. 406 * 407 * SR-IOV VF memory enable is handled by the MSE bit in the 408 * PF SR-IOV capability, there's therefore no need to trigger 409 * faults based on the virtual value. 410 */ > 411 return pdev->current_state < PCI_D3hot && 412 (pdev->no_command_memory || (cmd & PCI_COMMAND_MEMORY)); 413 } 414 -- 0-DAY CI Kernel Test Service https://01.org/lkp