On 30/10/18 13:00, Thomas Petazzoni wrote:
> Hello Marcin,
>
> Thanks for the feedback.
>
> On Tue, 30 Oct 2018 13:37:37 +0100, Marcin Wojtas wrote:
>
>> You use _really_ archaic firmware, the bug you see is 99% caused by a
>> bug already fixed long time ago (cleanup all PP2 BM pools correctly
>> during exit boot services). Please grab the latest release:
>> https://github.com/MarvellEmbeddedProcessors/edk2-open-platform/wiki/files/flash-image-18.09.4.bin
>> and let know if you observe any further issues with vanilla kernel.
>
> Even if this was a bug in the UEFI firmware, shouldn't the kernel be
> independent from that, by doing a proper reset/reinit of the HW ?
>
> I.e, isn't the firmware fix papering over a bug that should be fixed in
> Linux mvpp2 driver anyway ?
Absolutely. Leaving this unpatched in the kernel, with a 100% chance of
memory corruption is just mad.
I'm pretty sure there should be a way to sanely reset the interface
before it starts repainting the memory. And if there is none, we must
find a way to tell the user that the machine is a death trap. Really.
M.
PS: updating the FW to the version provided by Marcin indeed makes
things much more reliable. Thanks for that.
--
Jazz is not dead. It just smells funny...
