Hi Milan, On 16 December 2015 at 16:08, Milan Broz <gmazyland@xxxxxxxxx> wrote: > On 12/16/2015 04:18 AM, Baolin Wang wrote: >> From the dm-crypt performance report, we found it shows low efficiency >> with crypto engine for some mode (like ecb or xts mode). Because in dm >> crypt, it will map the IO data buffer with scatterlist, and send the >> scatterlist of one bio to the encryption engine, if send more scatterlists >> with bigger size at one time, that helps the engine palys best performance, >> which means a high encryption speed. >> >> But now the dm-crypt only map one segment (always one sector) of one bio >> with one scatterlist to the crypto engine at one time. which is more >> time-consuming and ineffective for the crypto engine. Especially for some >> modes which don't need different IV for each sector, we can map the whole >> bio with multiple scatterlists to improve the engine performance. >> >> But this optimization is not support some ciphers and IV modes which should >> do sector by sector and need different IV for each sector. >> >> Change since v1: >> - Introduce one different IV mode. >> - Change the conditions for bulk mode. > > I tried the patchset on 32bit Intel VM and kernel immediately OOPsed (just tried aes-ecb)... > I've checked the code and I guess some macros I used with different definitions on different arch. Could you please try the new patchset with some optimization on your platform? It can work well on my arm board. Thanks. -- Baolin.wang Best Regards -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
