On Thu, Jan 10, 2019 at 07:07:52PM +0100, Sebastian Andrzej Siewior wrote: > 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…
Yes, the "GPL condom" attempt doesn't work at all. It's been shot down a long time ago in the courts. My tolerance for ZFS is pretty non-existant. Sun explicitly did not want their code to work on Linux, so why would we do extra work to get their code to work properly? greg k-h
