Re: AMD-Vi: Unable to read/write to IOMMU perf counter

2021-02-07 Thread Tj (Elloe Linux)
On 06/02/2021 04:02, Suravee Suthikulpanit wrote: > Tj, > > I have posted RFCv3 in the BZ > https://bugzilla.kernel.org/show_bug.cgi?id=201753. > > RFCv3 patch adds the logic to retry checking after 20msec wait for each > retry loop since I have founded that certain platform takes about 10msec >

Re: AMD-Vi: Unable to read/write to IOMMU perf counter

2021-02-03 Thread Tj (Elloe Linux)
On 02/02/2021 05:54, Suravee Suthikulpanit wrote: > Could you please try the attached patch to see if the problem still > persist. Tested on top of commit 61556703b610 doesn't appear to have solved the issue. Linux version 5.11.0-rc6+ (tj@elloe000) (gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU

AMD-Vi: Unable to read/write to IOMMU perf counter

2021-01-25 Thread Tj (Elloe Linux)
Lenovo E495 reports: pci :00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter. pci :00:00.2: can't derive routing for PCI INT A pci :00:00.2: PCI INT A: not connected I found an existing identical bug report that doesn't seem to have gained any attention: https://bugzilla.ker