On Fri, Dec 11, 2020 at 07:29:04PM +0800, Tony W Wang-oc wrote: > The driver crc32c-intel match CPUs supporting X86_FEATURE_XMM4_2. > On platforms with Zhaoxin CPUs supporting this X86 feature, When > crc32c-intel and crc32c-generic are both registered, system will > use crc32c-intel because its .cra_priority is greater than > crc32c-generic. This case expect to use crc32c-generic driver for > some Zhaoxin CPUs to get performance gain, So remove these Zhaoxin > CPUs support from crc32c-intel. > > Signed-off-by: Tony W Wang-oc <TonyWWang-oc@xxxxxxxxxxx> Does this mean that the performance of the crc32c instruction on those CPUs is actually slower than a regular C implementation? That's very weird. - Eric
