On 29/8/23 20:27, Stefan Hajnoczi wrote:
> u64 alignment behaves differently depending on the architecture and so
> <uapi/linux/types.h> offers __aligned_u64 to achieve consistent behavior
> in kernel<->userspace ABIs.
>
> There are structs in <uapi/linux/vfio.h> that can trivially be updated
> to __aligned_u64 because the struct sizes are multiples of 8 bytes.
> There is no change in memory layout on any CPU architecture and
> therefore this change is safe.
>
> The commits that follow this one handle the trickier cases where
> explanation about ABI breakage is necessary.
>
> Suggested-by: Jason Gunthorpe <[email protected]>
> Reviewed-by: Jason Gunthorpe <[email protected]>
> Signed-off-by: Stefan Hajnoczi <[email protected]>
> ---
> include/uapi/linux/vfio.h | 18 +++++++++---------
> 1 file changed, 9 insertions(+), 9 deletions(-)
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>