On Thu, Nov 06, 2014 at 03:26:33PM +0100, Maxime Ripard wrote: > > But you still haven't explain why the driver, while it doesn't handle > the user space buffer at any time, should be worried that the data the > framework has given him are actually mapped. Encryption is used by IPsec and SKBs can be allocated in highmem. algif also exposes all ciphers to user-space memory which can also be in highmem. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html