Hi Herbert, On Sat, May 05, 2018 at 02:18:55PM +0800, Herbert Xu wrote: > On Fri, May 04, 2018 at 09:18:41AM +0200, 'Antoine Tenart' wrote: > > > > In this driver we need to perform in certain cases an invalidation, > > which is done thanks to invalidation requests. To do this we create > > dummy requests, using SKCIPHER_REQUEST_ON_STACK and > > AHASH_REQUEST_ON_STACK for ciphers and hashes. So when adding the AEAD > > algs support, in patch 8/10, AEAD_REQUEST_ON_STACK is used for the same > > reason. > > > > Should we allocate this in a different way? > > These are not uses intended for the ON_STACK macros. They were > only ever meant for existing users of the synchonous crypto API.
OK, I see. > I would suggest either allocating a new request on the spot or if > that is not convenient, pre-allocating it in the cra_init function. Or we could have similar macros in the driver: we wouldn't have VLAs since it would be driver specific. Thanks! Antoine -- Antoine Ténart, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
