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| author | Alex Williamson <alex.williamson@redhat.com> | 2020-06-02 13:53:00 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-06-02 13:53:00 -0600 |
| commit | 4f085ca2f5a8047845ab2d6bbe97089daed28655 (patch) | |
| tree | edcdc9a877c289bec1fdde6c26bcaca4f813f138 /drivers/vfio | |
| parent | ea20868c7197827f2585a65800b9de7d2b2c4bee (diff) | |
| parent | c8e9df4744a3e4d897a6ac6e71a38aa8d7b65aa0 (diff) | |
| download | linux-4f085ca2f5a8047845ab2d6bbe97089daed28655.tar.bz2 | |
Merge branch 'v5.8/vfio/kirti-migration-fixes' into v5.8/vfio/next
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index a6d632d44c82..391fafe82c5c 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -227,11 +227,12 @@ static void vfio_dma_bitmap_free(struct vfio_dma *dma) static void vfio_dma_populate_bitmap(struct vfio_dma *dma, size_t pgsize) { struct rb_node *p; + unsigned long pgshift = __ffs(pgsize); for (p = rb_first(&dma->pfn_list); p; p = rb_next(p)) { struct vfio_pfn *vpfn = rb_entry(p, struct vfio_pfn, node); - bitmap_set(dma->bitmap, (vpfn->iova - dma->iova) / pgsize, 1); + bitmap_set(dma->bitmap, (vpfn->iova - dma->iova) >> pgshift, 1); } } @@ -997,14 +998,14 @@ static int update_user_bitmap(u64 __user *bitmap, struct vfio_iommu *iommu, nbits + shift); if (copy_from_user(&leftover, - (const void *)(bitmap + copy_offset), + (void __user *)(bitmap + copy_offset), sizeof(leftover))) return -EFAULT; bitmap_or(dma->bitmap, dma->bitmap, &leftover, shift); } - if (copy_to_user((void *)(bitmap + copy_offset), dma->bitmap, + if (copy_to_user((void __user *)(bitmap + copy_offset), dma->bitmap, DIRTY_BITMAP_BYTES(nbits + shift))) return -EFAULT; |