Nouveau - Nov 2015 - [Bug 92870] New: GF117M nvkm_pmu_pgob fault

https://bugs.freedesktop.org/show_bug.cgi?id=92870

            Bug ID: 92870
           Summary: GF117M nvkm_pmu_pgob fault
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: xiaotian.wu at i-soft.com.cn
        QA Contact: xorg-team at lists.x.org

Created attachment 119500
  --> https://bugs.freedesktop.org/attachment.cgi?id=119500&action=edit
error message.

Dell notebook vostro 2421, lspci output:
    Intel Corporation 3rd Gen Core processor Graphics Controller
    NVIDIA Corporation GF117M [GeForce 610M/710M/810M/820M / GT
620M/625M/630M/720M]

When use kernel 4.2.x, all is ok.

If use kernel 4.3.x, kernel panic. Please see attachment for more message.

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Wu Xiaotian <xiaotian.wu at i-soft.com.cn> changed:

           What    |Removed                     |Added
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 Attachment #119500|text/plain                  |image/jpeg
          mime type|                            |

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https://bugs.freedesktop.org/show_bug.cgi?id=92870

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Interesting. The v4.3 kernel has:

void
nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable)
{
        if (pmu->func->pgob)
                pmu->func->pgob(pmu, enable);
}

But Ben's latest upstream has:

void
nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable)
{
        if (pmu && pmu->func->pgob)
                pmu->func->pgob(pmu, enable);
}

And indeed it looks like the GF117 is missing a PMU definition. I have no idea
why that'd be the case, but it was that way before the rewrite as well. The
simplest thing is to fix up that function as above, but I think we may also
want to enable the PMU on GF117.

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|GF117M nvkm_pmu_pgob fault  |GF117M nvkm_pmu_pgob fault
                   |                            |- v4.3 regression

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #2 from Martin Peres <martin.peres at free.fr> ---
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