hi good news (maybe) yesterday I was able to compile kernel 4.16.0-Fearless-Coyote-Experimental-c3600-64bit
git clone git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git git branch parisc-4.16-2 configured with - 64bit kernel - no SMP (since C3600 owns 1 CPU) - no preemption - no mlong-call - no built-in drivers, all drivers are kernel-modules this kernel was compiled with - hppa2.0-unknown-linux-gnu-{ gcc-v6.4.0, binutils-v2.29.1 } it has been running for a while and it seems stable, even on heavy I/O (I need 48h to confirm) with "decent" (not excellent, but acceptable) performance on a PCI_VIA_SATA controller # lspci | grep SATA 01:05.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE/SATA Controller (rev 50) # lsmod Module Size Used by sata_via 16126 2 libata 312324 1 sata_via # lsprettysize data.bin 488 Mbyte data.bin # time cp data.bin data2.bin real 0m20.034s user 0m0.012s sys 0m9.227s 500Mbyte / 20s means 25Mbyte/sec it's currently under testing ---------------------- original message ---------- flush_cache_range() may be called without context, which then triggers a BUG(). This patch by Dave Anglin adds code to correctly handle this case. parisc: Handle case where flush_cache_range is called with no context arch/parisc/kernel/cache.c | 41 ++++++++++++++++++++++++++++++++--------- 1 file changed, 32 insertions(+), 9 deletions(-)