On 2019-01-10 17:32:58 [+0000], Hutter, Tony wrote: > > But since when did out-of-tree modules use __kernel_fpu_begin? It's an > > x86-only thing, and shouldn't really be used by anyone, right? > > ZFS on Linux uses it for checksums. Its removal is currently breaking ZFS > builds against 5.0:
So btrfs uses crc32c() / kernel's crypto API for that and ZFS can't? Well the crypto API is GPL only exported so that won't work. crc32c() is EXPORT_SYMBOL() so it would work. On the other hand it does not look right to provide a EXPORT_SYMBOL wrapper around a GPL only interface… Sebastian
