diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 85b32c325282..cc1d64765ce7 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -342,8 +342,8 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr, vma = find_vma_intersection(mm, vaddr, vaddr + 1); if (vma && vma->vm_flags & VM_PFNMAP) { - *pfn = ((vaddr - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff; - if (is_invalid_reserved_pfn(*pfn)) + if (!follow_pfn(vma, vaddr, pfn) && + is_invalid_reserved_pfn(*pfn)) ret = 0; } done: @@ -555,7 +555,7 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data, continue; } - remote_vaddr = dma->vaddr + iova - dma->iova; + remote_vaddr = dma->vaddr + (iova - dma->iova); ret = vfio_pin_page_external(dma, remote_vaddr, &phys_pfn[i], do_accounting); if (ret) @@ -2345,10 +2345,10 @@ static int vfio_iommu_type1_dma_rw_chunk(struct vfio_iommu *iommu, vaddr = dma->vaddr + offset; if (write) - *copied = __copy_to_user((void __user *)vaddr, data, + *copied = copy_to_user((void __user *)vaddr, data, count) ? 0 : count; else - *copied = __copy_from_user(data, (void __user *)vaddr, + *copied = copy_from_user(data, (void __user *)vaddr, count) ? 0 : count; if (kthread) unuse_mm(mm); |