On 7/30/2015 4:46 PM, Herbert Xu wrote: > On Thu, Jul 30, 2015 at 04:39:26PM +0300, Horia Geantă wrote: >> The encap shared descriptor was changed to use the new IV convention. >> In the process some commands were shifted, making the output length >> zero, caam effectively writing garbage in dst. > > Thanks. > >> While here, update the decap descriptor to execute the "write" commands >> before the "read"s (as it previously was). >> This makes sure the input fifo is drained before becoming full. > > Actually, I deliberately did it that way because there was an errata > which said that doing a skipping load concurrently with a skipping > store may cause a hang. Is this not the case? > Indeed, there is: A-005473 - Using SEQ FIFO LOAD SKIP and SEQ FIFO STORE SKIP simultaneously will cause the DECO to hang. However, the skip commands are not consecutive, there's a math command between them (both for encap and decap descriptors). Horia -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
