Wind River Support Network

Description

SMBus is busy and the R/W transactions are failing with WRL9.
 * all the VM guests OSes (with version) running on the system

root@_RIO_Optical_P2B_EDVT-node:~# uname -a

Linux _RIO_Optical_P2B_EDVT-node 4.8.28-rt10-WR9.0.0.20_ovp #1 SMP Thu Jul 18 10:08:49 PDT 2019 x86_64 x86_64 x86_64 GNU/Linux

root@_RIO_Optical_P2B_EDVT-node:~#

*Platform Details : Intel x86-64 Broadwell DE based board from Juniper.*

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 86
model name : Intel(R) Xeon(R) CPU D-1528 @ 1.90GHz
stepping : 3
microcode : 0x7000013
cpu MHz : 1901.000
cache size : 9216 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 20
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb cat_l3 cdp_l3 invpcid_single ssbd ibrs ibpb stibp kaiser tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts flush_l1d
bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf
bogomips : 3799.81
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

 
 root@_RIO_Optical_P2B_EDVT-node:~# lspci -vvvs 1f.3

00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)

        Subsystem: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller

        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-

        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

        Interrupt: pin C routed to IRQ 18

        NUMA node: 0

        Region 0: Memory at 183fff010000 (64-bit, non-prefetchable) [size=256]

        Region 4: I/O ports at 3000 [size=32]

        Kernel driver in use: i801_smbus

        Kernel modules: i2c_i801

Workaround

NA

Steps to Reproduce

Project configration:
--dl-layers --distros wrlinux-ovp --machines intel-x86-64 --templates feature/initramfs,feature/kdump,feature/kexec,feature/kernel-ovp-kvm,feature/sysklogd,feature/dpdk,feature/package-management --layers wr-kernel wr-ovp

->Set up the development environment.

. ./environment-setup-x86_64-wrlinuxsdk-linux

. ./oe-init-build-env

-> Build target 

bitbake wrlinux-image-ovp-kvm

Deploy images to Broadwell DE board and reboot target repeatably while FreeBSD 11 guest image is running. Guest XML is provided in description.