Comment # 17 on bug 907692 from grant k

(In reply to Takashi Iwai from comment #16)
for case (3), @ desktop, with flags: -ssse3 -aes

    cat /proc/cpuinfo | egrep "model name|flags" | head -n2
        model name      : AMD Phenom(tm) II X4 945 Processor
        flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc
extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy
abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate npt lbrv
svm_lock nrip_save

> They are just built-in, so they are always there on that kernel flavor.  Hence modprobe "fails".  But 
> the functionality is already present on your system.

Can you clarify where it 'is', then?

    lsmod | egrep -i "aes|sha|sse" | grep -v sharp
        aes_x86_64             17131  0 
        sha512_generic         12942  0 

which requires

    /etc/modprobe.d/99-local-crypto.conf
        alias aes    aes-x86_64
        alias sha512 sha512_generic

but

    modprobe sha1
        modprobe: ERROR: could not find module by name='sha1_generic'
        modprobe: ERROR: could not insert 'sha1_generic': Function not
implemented

    modprobe sha256
        modprobe: ERROR: could not insert 'sha256_ssse3': No such device

    modprobe sha1_generic

    lsmod | egrep -i "aes|sha|sse" | grep -v sharp
        aes_x86_64             17131  0 
        sha512_generic         12942  0 

    modprobe sha256_generic
    lsmod | egrep -i "aes|sha|sse" | grep -v sharp
        aes_x86_64             17131  0 
        sha512_generic         12942  0 

I.e., there's no

    sha1_*
    sha256_*

module/capability