Re: [PATCH 0/3] Fix typing issues in the umem code

[Jason Gunthorpe <jgg@nvidia.com>]

On Mon, Jun 01, 2026 at 01:52:30PM -0300, Jason Gunthorpe wrote:
> The types are tricky here as we have a mixture of u64, dma_addr_t and
> unsigned long used purposefully for different things:
>  - The on-the-wire IOVA address of the MR is u64
>  - The dma address is dma_addr_t which can be u32 or u64
>  - unsigned long is used for pgsize, mostly because a bunch of bit math
>    helper functions are used and they are obnoxious to use u64
> 
> Fix various silent truncations, issues on 32 bit compiles and
> understandability.
> 
> Jason Gunthorpe (3):
>   RDMA/umem: Fix truncation for block sizes >= 4G
>   RDMA/umem: Be careful about boundary conditions in
>     ib_umem_find_best_pgsz()
>   RDMA/umem: Make ib_umem_is_contiguous() safe on 32 bit

I picked up t he first patch to -rc

Jason