next: fuloong2e qemu boot failure due to 'MIPS: Loongson: Add Loongson-3A R2 basic support'

[Guenter Roeck <linux@roeck-us.net>]

Hi,

qemu fails to boot in -next for machine fulong2e with configuration
fuloong2e_defconfig. Bisect points to commit 'MIPS: Loongson: Add
Loongson-3A R2 basic support'. qemu hangs in boot, after displaying 
"Inode-cache hash table entries: 16384 (order: 3, 131072 bytes)".

Bisect log is attached.

Guenter

---
# bad: [1bd7a2081d2c7b096f75aa934658e404ccaba5fd] Add linux-next specific files for 20160418
# good: [bf16200689118d19de1b8d2a3c314fc21f5dc7bb] Linux 4.6-rc3
git bisect start 'HEAD' 'v4.6-rc3'
# bad: [493ac92ff65ec4c4cd4c43870e778760a012951d] Merge remote-tracking branch 'ipvs-next/master'
git bisect bad 493ac92ff65ec4c4cd4c43870e778760a012951d
# bad: [20ca3ae9c517eee9b2f1bd0fb2a06e2d14153792] Merge remote-tracking branch 'btrfs-kdave/for-next'
git bisect bad 20ca3ae9c517eee9b2f1bd0fb2a06e2d14153792
# good: [c454e65fb9ade11d0f84718d06a6888e2c92804d] Merge remote-tracking branch 'omap/for-next'
git bisect good c454e65fb9ade11d0f84718d06a6888e2c92804d
# good: [6f5c70fb9b4fc0534157bfa40cea9b402e6f2506] Merge remote-tracking branch 'microblaze/next'
git bisect good 6f5c70fb9b4fc0534157bfa40cea9b402e6f2506
# bad: [7f053cd68fd14243c8f202b4086d7dd75c409e6f] MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT
git bisect bad 7f053cd68fd14243c8f202b4086d7dd75c409e6f
# good: [e9aacdd7f0b66c4ace17e5950c48e7cc61a253c8] MIPS: Allow RIXI to be used on non-R2 or R6 cores
git bisect good e9aacdd7f0b66c4ace17e5950c48e7cc61a253c8
# good: [d1e8b9a8dc6c7fa9add5dfa7083e035ce037e56d] MAINTAINERS: add Loongson1 architecture entry
git bisect good d1e8b9a8dc6c7fa9add5dfa7083e035ce037e56d
# good: [13ff6275bb389c3669082d3ef8483592a31eb0ea] MIPS: Fix siginfo.h to use strict posix types
git bisect good 13ff6275bb389c3669082d3ef8483592a31eb0ea
# good: [66e74bdd51e617023fa2e79a807b704fb3eed8aa] MIPS: Enable ptrace hw watchpoints on MIPS R6
git bisect good 66e74bdd51e617023fa2e79a807b704fb3eed8aa
# good: [f7cabc2dac8adf5986dbc700584bc3b8fe493d4d] MIPS: Loongson-3: Adjust irq dispatch to speedup processing
git bisect good f7cabc2dac8adf5986dbc700584bc3b8fe493d4d
# bad: [4978c8477e96fb9e9d870d8f42328dcabf1a65e9] MIPS: Loongson-3: Set cache flush handlers to cache_noop
git bisect bad 4978c8477e96fb9e9d870d8f42328dcabf1a65e9
# bad: [04a35922c1dac1b4864b8b366a37474e9e51d8c0] MIPS: Loongson: Add Loongson-3A R2 basic support
git bisect bad 04a35922c1dac1b4864b8b366a37474e9e51d8c0
# first bad commit: [04a35922c1dac1b4864b8b366a37474e9e51d8c0] MIPS: Loongson: Add Loongson-3A R2 basic support