Hi Masahiro,
On 03/08/17 08:32, Masahiro Yamada wrote:
> Hi.
>
> 2017-08-01 0:55 GMT+09:00 Thomas Gleixner <[email protected]>:
>> On Mon, 31 Jul 2017, Tomi Sarvela wrote:
>>> On 31/07/17 18:06, Thomas Gleixner wrote:
>>>> Can you please remove the patch. And try the following:
>>>>
>>>> # echo N > /sys/module/printk/parameters/console_suspend
>>>>
>>>> # echo mem > /sys/power/state
>>>>
>>>> and log the output of the serial console. That way we might get a clue
>>>> where it gets stuck.
>>>
>>> I'm afraid it hangs right away. No response from SSH, no output to serial.
>>
>> What means hangs right away? Is there no output at all on the serial
>> console? Or does it just stop at some point?
>>
>> Thanks,
>>
>> tglx
>>
>
> Sorry for jumping in.
> Finally, I found this thread.
>
>
> My environment is completely different (ARM64 board),
> I am also suffering from a hibernation problem
> since this commit.
>
>
> I get no response on the serial console
> after "Restarting tasks ... done." log message.
>
>
> By reverting bf22ff45bed6 ("genirq: Avoid unnecessary low level
> irq function calls", I can get hibernation working again.
>
>
> SW info:
> defconfig: arch/arm64/configs/defconfig
> DT : arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
> PSCI : ARM Trusted Firmware
>
>
> SoC info:
> CPU : Cortex-A72 * 2 + Cortex-A53 * 2
> irqchip : GICv3 (drivers/irq/irq-gic-v3.c)
Let me take an educated guess: It feels like your firmware doesn't
save/restore the GIC context across suspend/resume. Is that something
you could check, assuming you have access to the firmware source code?
Thanks,
M.
--
Jazz is not dead. It just smells funny...
