linux-kernel - Re: next: fuloong2e qemu boot failure due to 'MIPS: Loongson: AddLoongson-3A R2 basic support'

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Date:	Fri, 13 May 2016 06:42:53 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Huacai Chen <chenhc@...ote.com>
Cc:	Ralf Baechle <ralf@...ux-mips.org>,
	linux-mips <linux-mips@...ux-mips.org>,
	linux-next <linux-next@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: next: fuloong2e qemu boot failure due to 'MIPS: Loongson:
 AddLoongson-3A R2 basic support'

On 05/12/2016 10:49 PM, Huacai Chen wrote:
> I'll send a patch, but it seems be ignored by maintainer.
> https://patchwork.linux-mips.org/patch/13136/
>

It is marked as accepted, so it should be in Ralf's queue.

Thanks,
Guenter

> Huacai
>
> On Fri, May 13, 2016 at 11:46 AM, Guenter Roeck <linux@...ck-us.net> wrote:
>> On 04/19/2016 10:41 PM, Huacai Chen wrote:
>>>
>>> This is a kernel bug, I'll send a patch.
>>>
>>
>> Did you ever send a patch to fix this problem ? It is still broken in
>> next-20160512.
>>
>> Guenter
>>
>>
>>> Huacai
>>>
>>> On Wed, Apr 20, 2016 at 12:43 PM, Guenter Roeck <linux@...ck-us.net>
>>> wrote:
>>>>
>>>> On 04/19/2016 08:37 PM, 陈华才 wrote:
>>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> Could you please remove the line "#define cpu_hwrena_impl_bits
>>>>> 0xc0000000" in
>>>>> arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
>>>>> and try again?Thanks.
>>>>>
>>>>
>>>> That fixes the problem.
>>>>
>>>> Does this need to be addressed in qemu or in the Linux kernel ?
>>>>
>>>> Thanks,
>>>> Guenter
>>>>
>>>>
>>>>> Huacai
>>>>>
>>>>> ------------------ Original ------------------
>>>>> From:  "Guenter Roeck"<linux@...ck-us.net>;
>>>>> Date:  Wed, Apr 20, 2016 10:54 AM
>>>>> To:  "Huacai Chen"<chenhc@...ote.com>;
>>>>> Cc:  "Ralf Baechle"<ralf@...ux-mips.org>;
>>>>> "linux-mips"<linux-mips@...ux-mips.org>;
>>>>> "linux-next"<linux-next@...r.kernel.org>;
>>>>> "linux-kernel"<linux-kernel@...r.kernel.org>;
>>>>> Subject:  next: fuloong2e qemu boot failure due to 'MIPS: Loongson:
>>>>> AddLoongson-3A R2 basic support'
>>>>>
>>>>> 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
>>>>>
>>>>
>>>>
>>>
>>
>>
>