[PATCH] drm/i915: Do not drop pagetables when empty

[Rex Tsai]

Stefan Bader <stefan.bader at canonical.com> 於 2017年7月27日 週四 下午11:19寫道：

> > i.e. unsuitable for stable. Instead we neuter the code that tried to
> > free the pagetables.
> >
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99295
> > Fixes: 2ce5179fe826 ("drm/i915/gtt: Free unused lower-level page tables")
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Michel Thierry <michel.thierry at intel.com>
> > Cc: Mika Kuoppala <mika.kuoppala at intel.com>
> > Cc: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> > Cc: Michał Winiarski <michal.winiarski at intel.com>
> > Cc: Daniel Vetter <daniel.vetter at intel.com>
> > Cc: Jani Nikula <jani.nikula at linux.intel.com>
> > Cc: intel-gfx at lists.freedesktop.org
> > Cc: <stable at vger.kernel.org> # v4.10+
> > Tested-by: Maël Lavault <mael.lavault at protonmail.com>
> > Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> > Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> > (cherry picked from commit 92220696d5d07525443d9280c08c498e77d0386c)
>
> Not upstream linux tree, where was the patch picked from? I assume one of
> the
> stable trees, but which one?
>

As I explained in cover letter[1], it's from stable tree[2].

% git remote -v
origin git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
(fetch)
origin git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
(push)
% git tag --contains=92220696d5d07525443d9280c08c498e77d0386c
v4.11.10
v4.11.11
v4.11.12
v4.11.6
v4.11.7
v4.11.8
v4.11.9
% git branch --contains=92220696d5d07525443d9280c08c498e77d0386c
* linux-4.11.y

[1] https://lists.ubuntu.com/archives/kernel-team/2017-July/085964.html
[2]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=92220696d5d07525443d9280c08c498e77d0386c
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