Hi Allen, On Wed, 2019-03-27 at 14:35 -0700, Allen Martin wrote: > Hi Tom, I can confirm the ARMv8 fp register corruption reported here: > > https://marc.info/?l=linux-rt-users&m=153930857708206&w=2 > > still exists in 4.14.106-rt56. I was able to reproduce this on both > A57 and Carmel ARMv8 CPUs using the float_bessel subtest of > LTP. This > fix was to backport the following patch from 4.18.y-rt to 4.14-rt: > > 3afdfe419c33c1655d0763e070350aad44416594 > arm64: fpsimd: use preemp_disable in addition to local_bh_disable() > > Are you able to pick up this patch into 4.14-rt? I'm sure Anup and I > are not the only ones who are hitting this. > Yes, I was just about to start a new 4.14 update and will pull this one in. Thanks for letting me know. Tom > -Allen
