[pve-devel] ZFS 0.8 and __kernel_fpu_{begin,restore} symbols

Dietmar Maurer dietmar at proxmox.com
Thu May 30 13:33:48 CEST 2019


> I have seen zfs 0.8 has been merged in to the pve kernel master branch
> including the update to Kernel 5.0.8 for buster.
> 
> Does the Ubuntu/PVE kernel export the __kernel_fpu symbols?
> I ask because I didn't found a patch for this and it would be painful if
> we have zfs with crypto without good performance.
> 
> The patch used by NixOS https://github.com/NixOS/nixpkgs/pull/61076
> mentions a throughput drop of 1GB/s (200 instead of 1.2 GB/s) without
> the exported symbols.

No. I guess this would be a kernel license violation ...




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