zfs: upstream support for hardware-accelerated encryption

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1857040

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Also should apply:

commit 10fa254539ec41c6b043785d4e7ab34bce383b9f
Author: Brian Behlendorf <email address hidden>
Date: Thu Oct 24 10:17:33 2019 -0700

    Linux 4.14, 4.19, 5.0+ compat: SIMD save/restore

but this also requires a rather tricky backport of:

commit 006e9a40882468be68f276c946bae812b74ac35c
Author: Matthew Macy <email address hidden>
Date: Thu Sep 5 09:34:54 2019 -0700

    OpenZFS restructuring - move platform specific headers

and also we are dependant on a backport of:

commit 608f8749a1055e6769899788e11bd51fd396f9e5
Author: Brian Behlendorf <email address hidden>
Date: Tue Oct 1 12:50:34 2019 -0700

    Perform KABI checks in parallel

the following backport from the 0.8.3 queue should be what you are looking for:

https://github.com/zfsonlinux/zfs/pull/9776/commits/ed3d9f4420dcb04d2b78de4e4adb25797dc93b0d

it does not include/depend on either of the problematic commits, but does contain all known squashed follow-up fixes.

Just got this update in focal:

https://launchpad.net/ubuntu/+source/zfs-linux/0.8.2-3ubuntu5
* Add support for for hardware-accelerated encryption (LP: #1857040)
    and include faster KABI checks and restructuring backports to
    ease the backporting effort.
    Backport of upstream ZFS commits:
    - e5db31349484 "Linux 5.0 compat: SIMD compatibility"
    - 608f8749a105 "Perform KABI checks in parallel"
    - 095b5412b31c "Fix CONFIG_X86_DEBUG_FPU build failure"
    - b88ca2acf512 "Enable SIMD for encryption"
    - 006e9a408824 "OpenZFS restructuring - move platform specific headers"
    - 10fa254539ec "Linux 4.14, 4.19, 5.0+ compat: SIMD save/restore"

Nice!

The next spin of the focal kernel will pick this up when it is built with the new zfs-dkms driver.

I just installed the linux-generic kernel from focal-proposed (5.4.0-12-generic) built 1/21/2020@15:12:29. It still included zfs-kmod version was still 0.8.2-3ubuntu4. After installing zfs-dkms, kmod version was bumped 0.8.2-3ubuntu5. Fletcher_4_bench performance increased 2.7827x (3.3294 biteswap).

I don't know the ubuntu kernel build/release process. When does 0.8.2-3ubuntu5 get included into the kernel itself?

(BTW.... upstream 0.8.3 was released yesterday 1/23/2020. 0.8.2-3ubuntu5 will likely be old anyway)