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freke
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Joined: 23 Jan 2003
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PostPosted: Wed Oct 24, 2018 9:01 pm    Post subject: Config_crypto_crc32c_intel Reply with quote

Code:
CONFIG_CRYPTO_CRC32C_INTEL:

In Intel processor with SSE4.2 supported, the processor will
support CRC32C implementation using hardware accelerated CRC32
instruction. This option will create 'crc32c-intel' module,
which will enable any routine to use the CRC32 instruction to
gain performance compared with software implementation.

Is this Intel *only* or for any cpu reporting SSE4.2-support?
Code:
lamp /usr/src/linux # cpuid2cpuflags
CPU_FLAGS_X86: aes avx f16c mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3
lamp /usr/src/linux # cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 22
model           : 48
model name      : AMD GX-412TC SOC
stepping        : 1
microcode       : 0x7030105
cpu MHz         : 598.661
cache size      : 2048 KB


And is anything using this? ;)
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l33t
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PostPosted: Thu Oct 25, 2018 1:56 am    Post subject: Reply with quote

https://en.m.wikipedia.org/wiki/SSE4

Aa far as i can tell it’s part of the instruction set, so it should work on your AMD.
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freke
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PostPosted: Thu Oct 25, 2018 3:01 pm    Post subject: Reply with quote

Thx - will try and enable it :)
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