[Intel-gfx] ✗ Fi.CI.IGT: failure for drm/i915/ehl: Update MOCS table for EHL

[Matt Roper]

On Sat, Jun 01, 2019 at 06:22:53AM +0000, Patchwork wrote:
> == Series Details ==
> 
> Series: drm/i915/ehl: Update MOCS table for EHL
> URL   : https://patchwork.freedesktop.org/series/61409/
> State : failure
> 
> == Summary ==
> 
> CI Bug Log - changes from CI_DRM_6171_full -> Patchwork_13142_full
> ====================================================
> 
> Summary
> -------
> 
>   **FAILURE**
> 
>   Serious unknown changes coming with Patchwork_13142_full absolutely need to be
>   verified manually.
>   
>   If you think the reported changes have nothing to do with the changes
>   introduced in Patchwork_13142_full, please notify your bug team to allow them
>   to document this new failure mode, which will reduce false positives in CI.
> 
>   
> 
> Possible new issues
> -------------------
> 
>   Here are the unknown changes that may have been introduced in Patchwork_13142_full:
> 
> ### IGT changes ###
> 
> #### Possible regressions ####
> 
>   * igt at kms_cursor_crc@pipe-b-cursor-suspend:
>     - shard-snb:          [PASS][1] -> [DMESG-WARN][2]
>    [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6171/shard-snb1/igt@kms_cursor_crc@pipe-b-cursor-suspend.html
>    [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13142/shard-snb4/igt@kms_cursor_crc@pipe-b-cursor-suspend.html
> 

This seems to be unrelated; some kind of problem reading and then
writing to MSR_IA32_ENERGY_PERF_BIAS in the general x86 cpu code during
system resume:


   <4> [748.616267] unchecked MSR access error: RDMSR from 0x1b0 at rIP:
   0xffffffff8103391f (intel_epb_restore+0xf/0xa0)
   <4> [748.616269] Call Trace:
   <4> [748.616274]  syscore_resume+0x5b/0x290
   <4> [748.616278]  suspend_devices_and_enter+0x977/0xbb0
   <4> [748.616285]  pm_suspend+0x3e1/0x870
   <4> [748.616290]  state_store+0x78/0xe0
   <4> [748.616296]  kernfs_fop_write+0x104/0x190
   <4> [748.616302]  vfs_write+0xbd/0x1b0
   <4> [748.616306]  ksys_write+0x8f/0xe0
   <4> [748.616311]  do_syscall_64+0x55/0x1c0
   <4> [748.616315]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
   <4> [748.616318] RIP: 0033:0x7f15ac65c154
   <4> [748.616321] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00
   00 00 00 00 66 90 48 8d 05 b1 07 2e 00 8b 00 85 c0 75 13 b8 01 00 00 00
   0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 41 54 55 49 89 d4 53 48 89
   f5
   <4> [748.616323] RSP: 002b:00007ffcf5447988 EFLAGS: 00000246 ORIG_RAX:
   0000000000000001
   <4> [748.616325] RAX: ffffffffffffffda RBX: 0000000000000004 RCX:
   00007f15ac65c154
   <4> [748.616327] RDX: 0000000000000004 RSI: 0000564540e265b0 RDI:
   000000000000000d
   <4> [748.616328] RBP: 0000564540e265b0 R08: 0000564540e235e0 R09:
   00007f15acb4a540
   <4> [748.616330] R10: 0000564540e21010 R11: 0000000000000246 R12:
   0000564540e23500
   <4> [748.616332] R13: 0000000000000004 R14: 00007f15ac9342a0 R15:
   00007f15ac933760
   <4> [748.616344] unchecked MSR access error: WRMSR to 0x1b0 (tried to
   write 0x0000000000000006) at rIP: 0xffffffff81033953
   (intel_epb_restore+0x43/0xa0)
   <4> [748.616345] Call Trace:
   <4> [748.616348]  syscore_resume+0x5b/0x290
   <4> [748.616351]  suspend_devices_and_enter+0x977/0xbb0
   <4> [748.616358]  pm_suspend+0x3e1/0x870
   <4> [748.616363]  state_store+0x78/0xe0
   <4> [748.616367]  kernfs_fop_write+0x104/0x190
   <4> [748.616372]  vfs_write+0xbd/0x1b0
   <4> [748.616376]  ksys_write+0x8f/0xe0
   <4> [748.616381]  do_syscall_64+0x55/0x1c0
   <4> [748.616384]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
   <4> [748.616385] RIP: 0033:0x7f15ac65c154
   <4> [748.616387] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00
   00 00 00 00 66 90 48 8d 05 b1 07 2e 00 8b 00 85 c0 75 13 b8 01 00 00 00
   0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 41 54 55 49 89 d4 53 48 89
   f5
   <4> [748.616389] RSP: 002b:00007ffcf5447988 EFLAGS: 00000246 ORIG_RAX:
   0000000000000001
   <4> [748.616391] RAX: ffffffffffffffda RBX: 0000000000000004 RCX:
   00007f15ac65c154
   <4> [748.616393] RDX: 0000000000000004 RSI: 0000564540e265b0 RDI:
   000000000000000d
   <4> [748.616394] RBP: 0000564540e265b0 R08: 0000564540e235e0 R09:
   00007f15acb4a540
   <4> [748.616396] R10: 0000564540e21010 R11: 0000000000000246 R12:
   0000564540e23500
   <4> [748.616397] R13: 0000000000000004 R14: 00007f15ac9342a0 R15:
   00007f15ac933760

This patch only changes gen11 MOCS table, so it shouldn't have any
impact on a SNB system.


Matt

-- 
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795