Re: Radeon NI: GIT kernel with the nislands_smc commit doesn't boot on a Freescale P5040 board and P.A.Semi Nemo board

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Hi Christian,

On 5/8/21 06:33, Christian Zigotzky wrote:
> Hi Gustavo,
> 
> Your patch works! Thanks a lot! I tested it with my Freescale P5040 board and P.A.Semi Nemo board with a connected AMD Radeon HD6970 NI graphics cards (Cayman
> XT) today.

Awesome! :)

Thank you!
--
Gustavo

> 
> Have a nice day,
> Christian
> 
> 
> On 07 May 2021 at 08:43am, Christian Zigotzky wrote:
>> Hi Gustavo,
>>
>> Great! I will test it. Many thanks for your help.
>>
>> Cheers,
>> Christian
>>
>>
>>> On 7. May 2021, at 01:55, Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx> wrote:
>>>
>>> Hi Christian,
>>>
>>>> On 4/30/21 06:59, Christian Zigotzky wrote:
>>>> Hello,
>>>>
>>>> The Nemo board (A-EON AmigaOne X1000) [1] and the FSL P5040 Cyrus+ board (A-EON AmigaOne X5000) [2] with installed AMD Radeon HD6970 NI graphics cards (Cayman
>>>> XT) [3] don't boot with the latest git kernel anymore after the commit "drm/radeon/nislands_smc.h: Replace one-element array with flexible-array member in
>>>> struct NISLANDS_SMC_SWSTATE branch" [4].  This git kernel boots in a virtual e5500 QEMU machine with a VirtIO-GPU [5].
>>>>
>>>> I bisected today [6].
>>>>
>>>> Result: drm/radeon/nislands_smc.h: Replace one-element array with flexible-array member in struct NISLANDS_SMC_SWSTATE branch
>>>> (434fb1e7444a2efc3a4ebd950c7f771ebfcffa31) [4] is the first bad commit.
>>> I have a fix ready for this bug:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?h=testing/drm-nislands
>>>
>>> I wonder if you could help me to test it with your environment, please.
>>> It should be applied on top of mainline.
>>>
>>> Thank you!
>>> -- 
>>> Gustavo
>>>
>>>> I was able to revert this commit [7] and after a new compiling, the kernel boots without any problems on my AmigaOnes.
>>>>
>>>> After that I created a patch for reverting this commit for new git test kernels. [3]
>>>>
>>>> The kernel compiles and boots with this patch on my AmigaOnes. Please find attached the kernel config files.
>>>>
>>>> Please check the first bad commit.
>>>>
>>>> Thanks,
>>>> Christian
>>>>
>>>> [1] https://en.wikipedia.org/wiki/AmigaOne_X1000
>>>> [2] http://wiki.amiga.org/index.php?title=X5000
>>>> [3] https://forum.hyperion-entertainment.com/viewtopic.php?f=35&t=4377
>>>> [4] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=434fb1e7444a2efc3a4ebd950c7f771ebfcffa31
>>>> [5] qemu-system-ppc64 -M ppce500 -cpu e5500 -m 1024 -kernel uImage -drive format=raw,file=MintPPC32-X5000.img,index=0,if=virtio -netdev user,id=mynet0 -device
>>>> virtio-net-pci,netdev=mynet0 -append "rw root=/dev/vda" -device virtio-vga -usb -device usb-ehci,id=ehci -device usb-tablet -device virtio-keyboard-pci -smp 4
>>>> -vnc :1
>>>> [6] https://forum.hyperion-entertainment.com/viewtopic.php?p=53074#p53074
>>>> [7] git revert 434fb1e7444a2efc3a4ebd950c7f771ebfcffa3
> 



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