[RESEND][SRU][A][PATCH 0/1] Fix for LP#1738334 - hibmc regression

[Seth Forshee]

On Thu, Jan 04, 2018 at 10:23:55AM +1100, Daniel Axtens wrote:
> [SRU Justification]
> 
> [Impact]
> On Artful kernels, X fails to start and a kernel splat is printed.
> 
> This is because ea642c3216cb ("drm/ttm: add io_mem_pfn callback") is
> incomplete: the hisilicon hibmc driver does not contain the callback
> and so the kernel tries to execute code at NULL.
> 
> [Fix]
> There is a discussion and potential fix at
> https://lists.freedesktop.org/archives/dri-devel/2017-November/159002.html
> 
> That was deemed too ad-hoc and the community went with a larger fix
> instead:
> https://lists.freedesktop.org/archives/dri-devel/2017-December/161184.html
> However, this comes with an uncomfortably large regression potential,
> so I have stuck with the smaller fix for Artful - we can bring the
> larger fix in for Bionic.
> 
> [Regression Potential]
> Minimal - fix only touches hibmc driver. Tested on D05 board.
> 
> [Testcase]
> Install patched kernel, try to start X. If it succeeds, the fix
> works. If there's a kernel splat and X does not start, the fix does
> not work.
> 
> [Notes]
> HiSilicon would really like this fix in Artful in such time so that
> when the next 16.04 point release ships in February, the HWE kernel
> will work with Xorg.

I assume this will be wante for bionic also?