On Tue, Dec 15, 2020 at 06:28:11PM +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. > > When doing lmbench3 Create and Delete file test on partitions with > ext4 enabling metadata checksum, found using crc32c-generic driver > could get about 20% performance gain than using the driver crc32c-intel > on some Zhaoxin CPUs. > > This case expect to use crc32c-generic driver for these Zhaoxin CPUs > to get performance gain, so remove these Zhaoxin CPUs support from > crc32c-intel. > > Signed-off-by: Tony W Wang-oc <tonywwang...@zhaoxin.com> > --- > arch/x86/crypto/crc32c-intel_glue.c | 21 +++++++++++++++++++-- > 1 file changed, 19 insertions(+), 2 deletions(-)
This does not seem to address the latest comment from hpa. Thanks, -- Email: Herbert Xu <herb...@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
