[Bug 84662] Long pauses with Unreal demo Elemental on R9270X since : Always flush the HDP cache before submitting a CS to the GPU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84662

--- Comment #22 from Andy Furniss <adf.lists at gmail.com> ---
(In reply to Alexandre Demers from comment #21)

> > So currently a bit confused - as reported by Christoph in the other bug, it
> > is possible to have good with vanilla mesa/kernel, but apparently for me the
> > "same" mesa can also be bad.
> > 
> > I did try more clean/rebuild cycles including single thread but am currently
> > still bad.
> 
> I'm also seeing this behavior while bisecting a different bug on a 7950...
> Probably related...

It seems like current mesa doesn't build/install properly when patched without
being totally clean.

The mesa patch in this bug on an already built tree does provoke -

make[3]: Entering directory
'/mnt/sdb1/Src64/Mesa-git/mesa/src/gallium/drivers/radeon'
  CC       r600_buffer_common.lo
  CCLD     libradeon.la

but radeonsi_dri.so is not changed after make install.

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