Hi All,
We still have DMA problems with some PCI devices. Since the PowerPC
updates 4.21-1 [1] we need to decrease the RAM to 3500MB (mem=3500M) if
we want to work with our PCI devices. The FSL P5020 and P5040 have these
problems currently.
Error message:
[ 25.654852] bttv 1000:04:05.0: overflow 0x00000000fe077000+4096 of
DMA mask ffffffff bus mask df000000
All 5.x Linux kernels can't initialize a SCSI PCI card anymore so
booting of a Linux userland isn't possible.
PLEASE check the DMA changes in the PowerPC updates 4.21-1 [1]. The
kernel 4.20 works with all PCI devices without limitation of RAM.
We created a bug report a month ago. [2]
Thanks,
Christian
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8d6973327ee84c2f40dd9efd8928d4a1186c96e2
[2] https://bugzilla.kernel.org/show_bug.cgi?id=205201
