lkml.org 
[lkml]   [2020]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
Subject[Issue]platform/x86: iommu: System can't shutdown because iommu driver keeps checking the status of DMA_GSTS_TES
hi All,
I have a machine and there's only intel gpu.
the secureboot and vt-d is enabled in BIOS.
On the Ubuntu desktop, I do s2idle first and restart the machine.
The machine can't restart successfully, so I need to press the power
button to shutdown.
I tried each of the following and the issue can't be triggered.
1. disable secure boot in BIOS.
2. intel_iommu=off.
3. intel_iomm=igfx_off.
4. nomodeset
5. i915.modeset=0.

After I investigate further, find inte_iommu keeps checking the status
of DMA_GSTS_TES.
During the procedure of restart, the driver would disable iommu translation and
check the status of DMA_GSTS_TES until status of DMA_GSTS_TES is 0.

If you need more information, I can provide it.

Thanks
Koba Ko

\
 
 \ /
  Last update: 2020-06-15 05:48    [W:0.064 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site