mlx4 weird error "Failed to map EQ context memory" after update

[Hans Petter Selasky]

On 02/17/18 14:51, Greg V wrote:
> On 01/20/2018 12:18, Hans Petter Selasky wrote:
>> On 01/20/18 00:17, Greg V via freebsd-net wrote:
>>>
>>> On 01/19/2018 12:54, Hans Petter Selasky wrote:
>>>> On 01/18/18 14:11, Greg V wrote:
>>>>> Hi. I've upgraded CURRENT from December 19 
>>>>> (https://github.com/freebsd/freebsd/commit/fd53ccf393f4f8ac1948e97eca108) 
>>>>> to today 
>>>>> (https://github.com/freebsd/freebsd/commit/391a83c86bb91ae3840cf37b7de478f42cc97e2a) 
>>>>> and my Mellanox ConnectX-2 network card stopped working:
>>>>>
>>>>> mlx4_core0: <mlx4_core> mem 
>>>>> 0xfe100000-0xfe1fffff,0xf0800000-0xf0ffffff irq 32 at device 0.0 on 
>>>>> pci7
>>>>> mlx4_core: Mellanox ConnectX core driver v3.4.1 (October 2017)
>>>>> mlx4_core: Initializing mlx4_core
>>>>> mlx4_core0: command 0xffa failed: fw status = 0x1
>>>>> mlx4_core0: Failed to map EQ context memory, aborting
>>>>> device_attach: mlx4_core0 attach returned 12
>>>>>
>>>>>
>>>>> Loading the OLD mlx4.ko and mlx4en.ko on the NEW kernel actually 
>>>>> does work fine!
>>>>>
>>>>> Reverting all mlx4 changes between then and now (no big changes, 
>>>>> mostly just the 1 << 31 thing from D13858) and rebuilding the mlx4 
>>>>> module with CC=clang50 does not help.
>>>>>
>>>>> What happened?!
> Upgraded CURRENT again today, the problem went away :)

OK, nice to know.

--HPS