Public bug reported:
Binary package hint: cryptsetup
The initramfs hook script only adds a module named $cipher.ko for each
cipher that is used. Some ciphers have assembly optimized kernel modules
on some architectures wich should be used instead as they give much
better performance. (Using aes-i586.ko instead of aes.ko on my system
doubles disk throughput for sustained reads, while using 60% instead of
100% CPU)
Attached is a patch against feisty. I have only tested to build a
initramfs with it in a chroot, but it seems to be working.
The patch use find to look for cipher modules in $MODULESDIR/kernel/arch
directory wich should only find the asm module as the normal ones are in
$MODULESDIR/kernel/crypto. It would be better to look directly in
$MODULESDIR/kernel/arch/`uname -i`/crypto/, but uname -i only returns
"unknown" on Ubuntu.
** Affects: cryptsetup (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
Add optimized cipher modules to initramfs
https://launchpad.net/bugs/73862
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
