Messages in this thread | | | From | Koba Ko <> | Date | Tue, 30 Jun 2020 15:31:52 +0800 | Subject | Re: [Issue]platform/x86: iommu: System can't shutdown because iommu driver keeps checking the status of DMA_GSTS_TES |
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On Mon, Jun 15, 2020 at 3:20 PM Lu Baolu <baolu.lu@linux.intel.com> wrote: > > Hi Koba Ko, > > On 2020/6/15 11:19, Koba Ko wrote: > > 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 status of DMA_GSTS_TES until status of DMA_GSTS_TES is 0. > > > > If you need more information, I can provide it. > > Do you mind telling what platform is it? > > Best regards, > baolu Hi Baolu, Sorry, i missed your email. I'm running on TGL. My colleague has reported this on bugzilla. Have tested your patch and it works fine. https://bugzilla.kernel.org/show_bug.cgi?id=208363
Could you explain more about these patches!? Why do we need a flag for active iommu!?
Koba Ko
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