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charset=us-ascii Content-Disposition: inline In-Reply-To: <20240826204353.2228736-20-peterx@redhat.com> Hi Peter, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Peter-Xu/mm-Introduce-ARCH_SUPPORTS_HUGE_PFNMAP-and-special-bits-to-pmd-pud/20240827-044708 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240826204353.2228736-20-peterx%40redhat.com patch subject: [PATCH v2 19/19] vfio/pci: Implement huge_fault support config: i386-randconfig-063-20240827 (https://download.01.org/0day-ci/archive/20240828/202408280405.b1X5dVHo-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240828/202408280405.b1X5dVHo-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202408280405.b1X5dVHo-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) drivers/vfio/pci/vfio_pci_core.c:246:33: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:246:41: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:250:25: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:250:43: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:250:56: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:250:65: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:255:25: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:255:44: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:255:57: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:255:66: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:263:39: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_core.c:263:58: sparse: sparse: restricted pci_power_t degrades to integer >> drivers/vfio/pci/vfio_pci_core.c:1705:9: sparse: sparse: cast from restricted vm_fault_t vim +1705 drivers/vfio/pci/vfio_pci_core.c 1660 1661 static vm_fault_t vfio_pci_mmap_huge_fault(struct vm_fault *vmf, 1662 unsigned int order) 1663 { 1664 struct vm_area_struct *vma = vmf->vma; 1665 struct vfio_pci_core_device *vdev = vma->vm_private_data; 1666 unsigned long pfn, pgoff = vmf->pgoff - vma->vm_pgoff; 1667 vm_fault_t ret = VM_FAULT_SIGBUS; 1668 1669 if (order && (vmf->address & ((PAGE_SIZE << order) - 1) || 1670 vmf->address + (PAGE_SIZE << order) > vma->vm_end)) { 1671 ret = VM_FAULT_FALLBACK; 1672 goto out; 1673 } 1674 1675 pfn = vma_to_pfn(vma); 1676 1677 down_read(&vdev->memory_lock); 1678 1679 if (vdev->pm_runtime_engaged || !__vfio_pci_memory_enabled(vdev)) 1680 goto out_unlock; 1681 1682 switch (order) { 1683 case 0: 1684 ret = vmf_insert_pfn(vma, vmf->address, pfn + pgoff); 1685 break; 1686 #ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP 1687 case PMD_ORDER: 1688 ret = vmf_insert_pfn_pmd(vmf, __pfn_to_pfn_t(pfn + pgoff, 1689 PFN_DEV), false); 1690 break; 1691 #endif 1692 #ifdef CONFIG_ARCH_SUPPORTS_PUD_PFNMAP 1693 case PUD_ORDER: 1694 ret = vmf_insert_pfn_pud(vmf, __pfn_to_pfn_t(pfn + pgoff, 1695 PFN_DEV), false); 1696 break; 1697 #endif 1698 default: 1699 ret = VM_FAULT_FALLBACK; 1700 } 1701 1702 out_unlock: 1703 up_read(&vdev->memory_lock); 1704 out: > 1705 dev_dbg_ratelimited(&vdev->pdev->dev, 1706 "%s(,order = %d) BAR %ld page offset 0x%lx: 0x%x\n", 1707 __func__, order, 1708 vma->vm_pgoff >> 1709 (VFIO_PCI_OFFSET_SHIFT - PAGE_SHIFT), 1710 pgoff, (unsigned int)ret); 1711 1712 return ret; 1713 } 1714 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki