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:

quoted

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...