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    <p>What's the status with this error and the suggested patch to fix
      it ? It impacts GPU reset on Polaris11.</p>
    <p>Do we want to investigate why the original patch breaks it or
      just disable with the proposed patch ?</p>
    <p><br>
    </p>
    <p>P.S Suspend resume also stopped working on latest branch - will
      bisect it later today or tomorrow.</p>
    <p><br>
    </p>
    <p>Andrey<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 09/18/2018 11:00 AM, Christian König
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:edd44be9-2ef3-3c39-3342-5d3b4bbfa40a@amd.com">
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      <div class="moz-cite-prefix">Tom,<br>
        <br>
        can you try if the following makes it working again?<br>
        <br>
        diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
        b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c<br>
        index b6160de70d12..d65f5ba92fc5 100644<br>
        --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c<br>
        +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c<br>
        @@ -937,6 +937,10 @@ static int gfx_v8_0_ring_test_ib(struct
        amdgpu_ring *ring, long timeout)<br>
                return r;<br>
         }<br>
         <br>
        +static int gfx_v8_0_kiq_ring_test_ib(struct amdgpu_ring *ring,
        long timeout)<br>
        +{<br>
        +       return 0;<br>
        +}<br>
         <br>
         static void gfx_v8_0_free_microcode(struct amdgpu_device *adev)<br>
         {<br>
        @@ -7174,7 +7178,7 @@ static const struct amdgpu_ring_funcs
        gfx_v8_0_ring_funcs_kiq = {<br>
                .emit_ib = gfx_v8_0_ring_emit_ib_compute,<br>
                .emit_fence = gfx_v8_0_ring_emit_fence_kiq,<br>
                .test_ring = gfx_v8_0_ring_test_ring,<br>
        -       .test_ib = gfx_v8_0_ring_test_ib,<br>
        +       .test_ib = gfx_v8_0_kiq_ring_test_ib,<br>
                .insert_nop = amdgpu_ring_insert_nop,<br>
                .pad_ib = amdgpu_ring_generic_pad_ib,<br>
                .emit_rreg = gfx_v8_0_ring_emit_rreg,<br>
        <br>
        <br>
        Thanks,<br>
        Christian.<br>
        <br>
        Am 18.09.2018 um 16:41 schrieb Christian König:<br>
      </div>
      <blockquote type="cite"
        cite="mid:4a250398-d2ac-1650-739d-e4a6598f1c48@gmail.com">
        <div class="moz-cite-prefix">CRTC and GFX interrupts seem to be
          working perfectly fine.<br>
          <br>
          The problem here looks like only EOP interrupts from the
          Compute queue are not correctly handled.<br>
          <br>
          Most likely a bug somewhere in gfx_v8_0_eop_irq().<br>
          <br>
          Christian.<br>
          <br>
          Am 18.09.2018 um 16:36 schrieb Deucher, Alexander:<br>
        </div>
        <blockquote type="cite"
cite="mid:BN6PR12MB1809B0E02DDA1E8AACFFD1DAF71D0@BN6PR12MB1809.namprd12.prod.outlook.com">
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            <p style="margin-top:0;margin-bottom:0">FWIW, a number of
              consumer Raven boards have bad IVRS tables (windows
              doesn't use interrupt remapping so they are sometimes
              wrong and probably not validated.  There are a number of
              workaround to manually override the IVRS tables to make
              interrupts work.  I think specifying pci=noacpi is also a
              possible workaround.</p>
            <p style="margin-top:0;margin-bottom:0"><br>
            </p>
            <p style="margin-top:0;margin-bottom:0">Alex<br>
            </p>
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          <div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
              face="Calibri, sans-serif" color="#000000"><b>From:</b>
              amd-gfx <a class="moz-txt-link-rfc2396E"
                href="mailto:amd-gfx-bounces@lists.freedesktop.org"
                moz-do-not-send="true"><amd-gfx-bounces@lists.freedesktop.org></a>
              on behalf of Christian König <a
                class="moz-txt-link-rfc2396E"
                href="mailto:christian.koenig@amd.com"
                moz-do-not-send="true"><christian.koenig@amd.com></a><br>
              <b>Sent:</b> Tuesday, September 18, 2018 10:31:16 AM<br>
              <b>To:</b> StDenis, Tom; amd-gfx mailing list; Zhou,
              David(ChunMing)<br>
              <b>Subject:</b> Re: Regression on gfx8 with ring init</font>
            <div> </div>
          </div>
          <div class="BodyFragment"><font size="2"><span
                style="font-size:11pt;">
                <div class="PlainText">Well looks like interrupt
                  processing is working perfectly fine.<br>
                  <br>
                  But looking at the error message once more I see that
                  this actually <br>
                  affects ring number 9 and not the GFX ring.<br>
                  <br>
                  Can you fix amdgpu_ib_ring_tests() to print
                  ring->name instead of the <br>
                  number?<br>
                  <br>
                  That must be some of the compute rings.<br>
                  <br>
                  Thanks,<br>
                  Christian.<br>
                  <br>
                  Am 18.09.2018 um 16:20 schrieb Tom St Denis:<br>
                  > On 2018-09-18 10:13 a.m., Christian König wrote:<br>
                  >> Mhm, there is no more failed IB-test in there
                  isn't it?<br>
                  ><br>
                  > oh sorry I thought you wanted to test HEAD~ ...
                  Attached is a log from <br>
                  > the tip of drm-next<br>
                  ><br>
                  > Tom<br>
                  ><br>
                  >><br>
                  >> Christian.<br>
                  >><br>
                  >> Am 18.09.2018 um 16:09 schrieb Tom St Denis:<br>
                  >>> Disabling IOMMU in the BIOS resulted in a
                  correct boot up...<br>
                  >>><br>
                  >>> Here's the log.<br>
                  >>><br>
                  >>> Tom<br>
                  >>><br>
                  >>> On 2018-09-18 9:58 a.m., Tom St Denis
                  wrote:<br>
                  >>>> Odd I couldn't even boot my system
                  with the dGPU as primary after <br>
                  >>>> rebuilding the kernel.  It got hung
                  up in the IOMMU driver (loads <br>
                  >>>> of AMD-Vi IOMMU errors) which I
                  wasn't able to capture because it <br>
                  >>>> panic'ed before loading the network
                  stack.<br>
                  >>>><br>
                  >>>> Bizarre.<br>
                  >>>><br>
                  >>>> I'll keep trying.<br>
                  >>>><br>
                  >>>> Tom<br>
                  >>>><br>
                  >>>> On 2018-09-18 9:35 a.m., Christian
                  König wrote:<br>
                  >>>>> Am 18.09.2018 um 15:32 schrieb
                  Tom St Denis:<br>
                  >>>>>> On 2018-09-18 9:30 a.m.,
                  Christian König wrote:<br>
                  >>>>>>> Great, not sure if that
                  is a good or a bad news.<br>
                  >>>>>>><br>
                  >>>>>>> Anyway going to revert
                  the change for now. Does anybody <br>
                  >>>>>>> volunteer to figure out
                  why interrupts sometimes doesn't work <br>
                  >>>>>>> correctly on Raven?<br>
                  >>>>>><br>
                  >>>>>> What does "doesn't work
                  correctly?"  My workstation is a Raven1 <br>
                  >>>>>> (Ryzen 2400G) and other than
                  the TTM bulk move issue has been <br>
                  >>>>>> perfectly stable (through
                  suspend/resumes too I might add).<br>
                  >>>>>><br>
                  >>>>>> Anything I could test with my
                  devel raven?<br>
                  >>>>><br>
                  >>>>> The problem seems to be that on
                  some boards IH handling doesn't <br>
                  >>>>> work as it should.<br>
                  >>>>><br>
                  >>>>> Can you try to disable the
                  onboard graphics and try again?<br>
                  >>>>><br>
                  >>>>> If that still doesn't work there
                  is a DRM_DEBUG in <br>
                  >>>>> amdgpu_ih_process(), make that a
                  DRM_ERROR and send me the <br>
                  >>>>> resulting dmesg of loading amdgpu
                  (but don't start any UMD).<br>
                  >>>>><br>
                  >>>>> Thanks,<br>
                  >>>>> Christian.<br>
                  >>>>><br>
                  >>>>>><br>
                  >>>>>><br>
                  >>>>>> Tom<br>
                  >>>>>><br>
                  >>>>>>><br>
                  >>>>>>> Christian.<br>
                  >>>>>>><br>
                  >>>>>>> Am 18.09.2018 um 15:27
                  schrieb Tom St Denis:<br>
                  >>>>>>>> This commit:<br>
                  >>>>>>>><br>
                  >>>>>>>> [root@raven linux]#
                  git bisect good<br>
                  >>>>>>>>
                  9b0df0937a852d299fbe42a5939c9a8a4cc83c55 is the first
                  bad commit<br>
                  >>>>>>>> commit
                  9b0df0937a852d299fbe42a5939c9a8a4cc83c55<br>
                  >>>>>>>> Author: Christian
                  König <a class="moz-txt-link-rfc2396E"
                    href="mailto:christian.koenig@amd.com"
                    moz-do-not-send="true"><christian.koenig@amd.com></a><br>
                  >>>>>>>> Date:   Tue Sep 18
                  10:38:09 2018 +0200<br>
                  >>>>>>>><br>
                  >>>>>>>>     drm/amdgpu:
                  remove fence fallback<br>
                  >>>>>>>><br>
                  >>>>>>>>     DC doesn't seem
                  to have a fallback path either.<br>
                  >>>>>>>><br>
                  >>>>>>>>     So when
                  interrupts doesn't work any more we are pretty much <br>
                  >>>>>>>> busted no<br>
                  >>>>>>>>     matter what.<br>
                  >>>>>>>><br>
                  >>>>>>>>     Signed-off-by:
                  Christian König <a class="moz-txt-link-rfc2396E"
                    href="mailto:christian.koenig@amd.com"
                    moz-do-not-send="true"><christian.koenig@amd.com></a><br>
                  >>>>>>>>     Reviewed-by:
                  Chunming Zhou <a class="moz-txt-link-rfc2396E"
                    href="mailto:david1.zhou@amd.com"
                    moz-do-not-send="true"><david1.zhou@amd.com></a><br>
                  >>>>>>>><br>
                  >>>>>>>> Results in this:<br>
                  >>>>>>>><br>
                  >>>>>>>> [   24.334025] [drm]
                  Initialized amdgpu 3.27.0 20150101 for <br>
                  >>>>>>>> 0000:07:00.0 on minor
                  1<br>
                  >>>>>>>> [   24.335674]
                  modprobe (3895) used greatest stack depth: 12600 <br>
                  >>>>>>>> bytes left<br>
                  >>>>>>>> [   26.272358]
                  [drm:gfx_v8_0_ring_test_ib [amdgpu]] *ERROR* <br>
                  >>>>>>>> amdgpu: IB test timed
                  out.<br>
                  >>>>>>>> [   26.272460]
                  [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* <br>
                  >>>>>>>> amdgpu: failed
                  testing IB on ring 9 (-110).<br>
                  >>>>>>>> [   26.407885]
                  [drm:process_one_work] *ERROR* ib ring test <br>
                  >>>>>>>> failed (-110).<br>
                  >>>>>>>> [   28.506708] fuse
                  init (API version 7.27)<br>
                  >>>>>>>><br>
                  >>>>>>>> On init with my
                  polaris/raven1 system.<br>
                  >>>>>>>><br>
                  >>>>>>>> Cheers,<br>
                  >>>>>>>> Tom<br>
                  >>>>>>>>
                  _______________________________________________<br>
                  >>>>>>>> amd-gfx mailing list<br>
                  >>>>>>>> <a
                    class="moz-txt-link-abbreviated"
                    href="mailto:amd-gfx@lists.freedesktop.org"
                    moz-do-not-send="true">amd-gfx@lists.freedesktop.org</a><br>
                  >>>>>>>> <a
                    href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx"
                    moz-do-not-send="true">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a><br>
                  >>>>>>><br>
                  >>>>>><br>
                  >>>>><br>
                  >>>><br>
                  >>><br>
                  >><br>
                  ><br>
                  <br>
                  _______________________________________________<br>
                  amd-gfx mailing list<br>
                  <a class="moz-txt-link-abbreviated"
                    href="mailto:amd-gfx@lists.freedesktop.org"
                    moz-do-not-send="true">amd-gfx@lists.freedesktop.org</a><br>
                  <a
                    href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx"
                    moz-do-not-send="true">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a><br>
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          <pre wrap="">_______________________________________________
amd-gfx mailing list
<a class="moz-txt-link-abbreviated" href="mailto:amd-gfx@lists.freedesktop.org" moz-do-not-send="true">amd-gfx@lists.freedesktop.org</a>
<a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" moz-do-not-send="true">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a>
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      <pre wrap="">_______________________________________________
amd-gfx mailing list
<a class="moz-txt-link-abbreviated" href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a>
<a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a>
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