@@ -478,8 +478,7 @@ static int pds_vfio_dirty_sync(struct pds_vfio_pci_device *pds_vfio,
pds_vfio->vf_id, iova, length, pds_vfio->dirty.region_page_size,
pages, bitmap_size);
- if (!length || ((dirty->region_start + iova + length) >
- (dirty->region_start + dirty->region_size))) {
+ if (!length || ((iova - dirty->region_start + length) > dirty->region_size)) {
dev_err(dev, "Invalid iova 0x%lx and/or length 0x%lx to sync\n",
iova, length);
return -EINVAL;
@@ -496,7 +495,8 @@ static int pds_vfio_dirty_sync(struct pds_vfio_pci_device *pds_vfio,
return -EINVAL;
}
- bmp_offset = DIV_ROUND_UP(iova / dirty->region_page_size, sizeof(u64));
+ bmp_offset = DIV_ROUND_UP((iova - dirty->region_start) /
+ dirty->region_page_size, sizeof(u64));
dev_dbg(dev,
"Syncing dirty bitmap, iova 0x%lx length 0x%lx, bmp_offset %llu bmp_bytes %llu\n",