sonic-buildimage/device/dell/x86_64-dellemc_s5212f_c3538-r0
Aravind Mani 6c82346c3d [DellEMC] DMA errors are seen when loading bullseye kernel (#9641)
Following errors are seen continuously on SMBus controller when loading bullseye kernel.

[ 273.643046] DMAR: [DMA Write] Request device [00:12.0] PASID ffffffff fault addr 0 [fault reason 05] PTE Write access is not set
[ 273.785784] DMAR: DRHD: handling fault status reg 2
[ 273.844072] DMAR: [DMA Write] Request device [00:12.0] PASID ffffffff fault addr 0 [fault reason 05] PTE Write access is not set
[ 273.986804] DMAR: DRHD: handling fault status reg 2
[ 274.045101] DMAR: [DMA Write] Request device [00:12.0] PASID ffffffff fault addr 0 [fault reason 05] PTE Write access is not set
[ 274.187789] DMAR: DRHD: handling fault status reg 2

root@sonic:~# lspci -s 00:12.0 -vv
00:12.0 System peripheral: Intel Corporation Atom Processor C3000 Series SMBus Contoller - Host (rev 11)

Issue was not seen in buster. 

Modified platform specific installer.conf to turn off io_mmu
2022-01-08 16:36:06 -08:00
..
DellEMC-S5212f-P-25G Added Support for Dell EMC S5212f in SONiC (#8678) 2021-10-26 12:52:03 -07:00
plugins Added Support for Dell EMC S5212f in SONiC (#8678) 2021-10-26 12:52:03 -07:00
default_sku Added Support for Dell EMC S5212f in SONiC (#8678) 2021-10-26 12:52:03 -07:00
installer.conf [DellEMC] DMA errors are seen when loading bullseye kernel (#9641) 2022-01-08 16:36:06 -08:00
led_proc_init.soc Added Support for Dell EMC S5212f in SONiC (#8678) 2021-10-26 12:52:03 -07:00
platform_asic [devices]: Add platform_asic files for new platforms (#9078) 2021-10-27 08:58:05 -07:00
pmon_daemon_control.json Added Support for Dell EMC S5212f in SONiC (#8678) 2021-10-26 12:52:03 -07:00