[PATCH v2] cxl: Use fixed width predefined types in data structure.

[Frederic Barrat]

Le 05/08/2016 à 14:02, Philippe Bergheaud a écrit :
> This patch fixes a regression introduced by commit b810253.
>
> It substitutes the type __u8 to u8 in the uapi header cxl.h,
> because the latter is not always defined in userland build
> environments, in particular when cross-compiling libcxl on
> x86_64 linux machines (RHEL6.7 and Ubuntu 16.04).
>
> This patch also changes the size of the field data_size, and
> makes it constant, to support 32-bit userland applications
> running on big-endian ppc64 kernels transparently.
>
> This breaks the (young) API that has been merged in v4.8.
>
> Signed-off-by: Philippe Bergheaud <felix at linux.vnet.ibm.com>
> ---
> Changes since v1:
>   Added an explanation for the proposed API change in the log.
>
> Note:
> As far as I know, cxlflash is the only known user of the API.


Yes, ideally, we'd like to change the type of 'data_size' to something 
smaller/constant and were expecting it's still doable since the API was 
merged to 4.8 and the expected user (cxlflash) hasn't started using the 
API yet.

Reviewed-by: Frederic Barrat <fbarrat at linux.vnet.ibm.com>

   Fred