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sonic-buildimage/device/dell/x86_64-dellemc_z9264f_c3538-r0
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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-Z9264f-C8D112 SONIC QOS YANG - Remove qos tables field value refernce format (#7752) 2021-09-28 09:21:24 -07:00
DellEMC-Z9264f-C64 SONIC QOS YANG - Remove qos tables field value refernce format (#7752) 2021-09-28 09:21:24 -07:00
DellEMC-Z9264f-Q64 SONIC QOS YANG - Remove qos tables field value refernce format (#7752) 2021-09-28 09:21:24 -07:00
plugins [platform] Update QSFP method name 'parse_qsfp_dom_capability' -> 'parse_dom_capability' (#6695) 2021-02-05 14:41:05 -08:00
default_sku [devices]: Adding new SKU to DELL Z9264f (#2891) 2019-05-13 13:36:25 -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 [devices]: DellEMC new platform support for z9264f - 64x100 (#26) 2018-08-11 09:09:03 +00:00
media_settings.json [devices]: Updating pre-emphasis for Z9264f based on updated HW Spec (#3267) 2019-08-07 09:28:51 -07:00
platform_asic Add platform_asic file to each platform folder in sonic-device-data based package (#8542) 2021-10-08 19:27:48 -07:00
pmon_daemon_control.json DellEMC: Skip thermalctld (S6000, S6100, Z9100 and Z9264) and thermal platform API changes (#4644) 2020-05-27 12:22:55 -07:00