[pkg-cryptsetup-devel] Bug#1087271: Please add vmx_crypto kernel module for PowerPC/ppc64el architecture

[Melvin Vermeeren]

Package: cryptsetup-initramfs
Version: 2:2.6.1-4~deb12u2
User: debian-powerpc at lists.debian.org
Usertags: ppc64el

Hi,

On PowerPC architecture, such as ppc64le with POWER9 CPU, the vmx_crypto 
modules provides CPU-based hardware acceleration for crypto operations. The 
current logic seems to not include vmx_crypto module in the initramfs. As a 
result all LUKS/dm-crypt mappings opened in the initramfs will have very poor 
performance due to usage of a fallback non-hwaccel crypto implementation. On a 
server host affected the difference in throughput with was about 4 times.

Would it be possible to automatically include vmx_crypto module in initramfs 
for relevant hardware architectures? I have confirmed that adding the module 
to /etc/initramfs-tools/modules resolves the issue, force-loading not needed.

Thanks,

-- 
Melvin Vermeeren
Systems engineer
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