Hi Will, On a gigabyte system with Cavium CN8xx, when doing a fio test against an nvme drive we are seeing the following:
[ 637.161194] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x8010003f6000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.174329] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x801000036000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.186887] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x8010002ee000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.199275] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x8010003c7000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.211885] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x801000392000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.224580] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x801000018000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.237241] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x801000360000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.249657] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x8010000ba000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.262120] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x80100003e000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 [ 637.274468] arm-smmu arm-smmu.1.auto: Unhandled context fault: fsr=0x80000402, iova=0x801000304000, fsynr=0x70091, cbfrsynra=0x9000, cb=7 I also reproduced with 5.5-rc7, and will check 5.6-rc1 later today. I couldn't narrow it down further into 5.4-rc1. I don't know smmu or the code well, any thoughts on where to start digging into this? fio test that is being run is: #fio -filename=/dev/nvme0n1 -iodepth=64 -thread -rw=randwrite -ioengine=libaio -bs=4k -runtime=43200 -size=-group_reporting -name=mytest -numjobs=32 Regards, Jerry _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
