Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-27 Thread Daniel Drake
Hi Joerg, Thanks for looking into this. We confirm that this workaround avoids the iommu log spam and that amdgpu appears to be working fine with it. Daniel On Wed, Mar 22, 2017 at 5:22 AM, j...@8bytes.org wrote: > On Tue, Mar 21, 2017 at 04:30:55PM +, Deucher, Alexander

Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-22 Thread 'j...@8bytes.org'
On Tue, Mar 21, 2017 at 04:30:55PM +, Deucher, Alexander wrote: > > I am preparing a debug-patch that disables ATS for these GPUs so someone > > with such a chip can test it. > > Thanks Joerg. Here is a debug patch, using the hard hammer of disabling the use of ATS completly in the AMD IOMMU

RE: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread Deucher, Alexander
- > foundation.org; Suthikulpanit, Suravee; Linux Upstreaming Team > Subject: Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait > loop timed out > > On Tue, Mar 21, 2017 at 04:17:40PM +, Deucher, Alexander wrote: > > > -Original Message- > > &

Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread 'j...@8bytes.org'
Daniel Drake; Chris Chiu; amd-...@lists.freedesktop.org; > > Nath, Arindam; iommu@lists.linux-foundation.org; Suthikulpanit, Suravee; > > Linux Upstreaming Team > > Subject: Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait > > loop timed out > > > > On Tue, Mar 21,

RE: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread Deucher, Alexander
ikulpanit, Suravee; > Linux Upstreaming Team > Subject: Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait > loop timed out > > On Tue, Mar 21, 2017 at 04:01:53PM +, Deucher, Alexander wrote: > > It seems to only affect Stoney systems, but not others (Carrizo, &

RE: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread Nath, Arindam
t, Suravee; >Linux Upstreaming Team >Subject: Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait >loop timed out > >On Tue, Mar 21, 2017 at 04:01:53PM +, Deucher, Alexander wrote: >> It seems to only affect Stoney systems, but not others (Carrizo, >>

Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread 'j...@8bytes.org'
On Tue, Mar 21, 2017 at 04:01:53PM +, Deucher, Alexander wrote: > It seems to only affect Stoney systems, but not others (Carrizo, > Bristol, etc.). Maybe we could just disable it on Stoney until we > root cause it. Completion-wait loop timeouts indicate something is seriously wrong. How can

RE: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread Deucher, Alexander
on.org; Suthikulpanit, Suravee; Linux Upstreaming Team > Subject: Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait > loop timed out > > On Fri, Mar 17, 2017 at 11:53:09AM -0400, Alex Deucher wrote: > > On Fri, Mar 17, 2017 at 8:15 AM, Daniel Drake <dr...@endlessm.com>

Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-21 Thread j...@8bytes.org
On Fri, Mar 17, 2017 at 11:53:09AM -0400, Alex Deucher wrote: > On Fri, Mar 17, 2017 at 8:15 AM, Daniel Drake wrote: > > Hi, > > > > On Mon, Mar 13, 2017 at 2:01 PM, Deucher, Alexander > > wrote: > >> > We are unable to boot Acer Aspire E5-553G (AMD

Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-17 Thread Alex Deucher
On Fri, Mar 17, 2017 at 8:15 AM, Daniel Drake wrote: > Hi, > > On Mon, Mar 13, 2017 at 2:01 PM, Deucher, Alexander > wrote: >> > We are unable to boot Acer Aspire E5-553G (AMD FX-9800P RADEON R7) nor >> > Acer Aspire E5-523 with standard

Re: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-17 Thread Daniel Drake
Hi, On Mon, Mar 13, 2017 at 2:01 PM, Deucher, Alexander wrote: > > We are unable to boot Acer Aspire E5-553G (AMD FX-9800P RADEON R7) nor > > Acer Aspire E5-523 with standard configurations because during boot > > the screen is flooded with the following error message

amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-13 Thread Daniel Drake
Hi, We are unable to boot Acer Aspire E5-553G (AMD FX-9800P RADEON R7) nor Acer Aspire E5-523 with standard configurations because during boot the screen is flooded with the following error message over and over: AMD-Vi: Completion-Wait loop timed out We have left the system for quite a while

RE: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait loop timed out

2017-03-13 Thread Deucher, Alexander
desktop.org > Subject: amd-iommu: can't boot with amdgpu, AMD-Vi: Completion-Wait > loop timed out > > Hi, > > We are unable to boot Acer Aspire E5-553G (AMD FX-9800P RADEON R7) nor > Acer Aspire E5-523 with standard configurations because during boot > the screen is