On Fri, Sep 04, 2020 at 07:41:47PM -0300, Jason Gunthorpe wrote:
> @@ -33,11 +34,17 @@ static inline int ib_umem_offset(struct ib_umem *umem)
> return umem->address & ~PAGE_MASK;
> }
>
> +static inline size_t ib_umem_num_dma_blocks(struct ib_umem *umem,
> + unsigned long pgsz)
> +{
> + return (ALIGN(umem->iova + umem->length, pgsz) -
> + ALIGN_DOWN(umem->iova, pgsz)) /
> + pgsz;
> +}
0-day says this triggers a __udivdi3 error because iova is 64 bit,
I'll change this to:
static inline size_t ib_umem_num_dma_blocks(struct ib_umem *umem,
unsigned long pgsz)
{
- return (ALIGN(umem->iova + umem->length, pgsz) -
- ALIGN_DOWN(umem->iova, pgsz)) /
+ return (size_t)((ALIGN(umem->iova + umem->length, pgsz) -
+ ALIGN_DOWN(umem->iova, pgsz))) /
pgsz;
}
Jason
