Re: [PATCH] drm/etnaviv: fix external abort seen on GC600 rev 0x19

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On Sun, Aug 23, 2020 at 09:10:25PM +0200, Christian Gmeiner wrote:
> Hi
> 
> > I have formally tested the patch with 5.7.10 - and it doesn't resolve
> > the issue - sadly :(
> >
> > From my testing, the reads on
> > VIVS_HI_CHIP_PRODUCT_ID
> > VIVS_HI_CHIP_ECO_ID
> > need to be conditional - while
> > VIVS_HI_CHIP_CUSTOMER_ID
> > seems to be okay.
> >
> 
> Uhh.. okay.. just send a V2 - thanks for testing :)

There is also something else going on with the GC600 - 5.4 worked fine,
5.8 doesn't - my 2D Xorg driver gets stuck waiting on a BO after just
a couple of minutes.  Looking in debugfs, there's a whole load of BOs
that are listed as "active", yet the GPU is idle:

   00020000: A  0 ( 7) 00000000 00000000 8294400
   00010000: I  0 ( 1) 00000000 00000000 4096
   00010000: I  0 ( 1) 00000000 00000000 4096
   00010000: I  0 ( 1) 00000000 00000000 327680
   00010000: A  0 ( 7) 00000000 00000000 8388608
   00010000: I  0 ( 1) 00000000 00000000 8388608
   00010000: I  0 ( 1) 00000000 00000000 8388608
   00010000: A  0 ( 7) 00000000 00000000 8388608
   00010000: A  0 ( 3) 00000000 00000000 8388608
   00010000: A  0 ( 4) 00000000 00000000 8388608
   00010000: A  0 ( 3) 00000000 00000000 8388608
   00010000: A  0 ( 3) 00000000 00000000 8388608
   00010000: A  0 ( 3) 00000000 00000000 8388608
....
   00010000: A  0 ( 3) 00000000 00000000 8388608
Total 38 objects, 293842944 bytes

My guess is there's something up with the way a job completes that's
causing the BOs not to be marked inactive.  I haven't yet been able
to debug any further.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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