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[DellEMC] DMA errors are seen when loading bullseye kernel (#9641)

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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
This commit is contained in:
Aravind Mani 2022-01-03 22:17:13 +05:30 committed by Judy Joseph
parent dd8fd57bb5
commit 6c82346c3d
8 changed files with 8 additions and 0 deletions
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1
device/dell/x86_64-dellemc_n3248pxe_c3338-r0/installer.conf
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@ -1,3 +1,4 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
VAR_LOG_SIZE=512
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_n3248te_c3338-r0/installer.conf
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@ -1,3 +1,4 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
VAR_LOG_SIZE=512
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_s5212f_c3538-r0/installer.conf
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@ -1,3 +1,4 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
CONSOLE_SPEED=115200
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_s5224f_c3538-r0/installer.conf
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@ -1,2 +1,3 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_s5232f_c3538-r0/installer.conf
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@ -1,2 +1,3 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_s5248f_c3538-r0/installer.conf
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@ -1,3 +1,4 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
CONSOLE_SPEED=115200
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_s5296f_c3538-r0/installer.conf
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@ -1,2 +1,3 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"

1
device/dell/x86_64-dellemc_z9264f_c3538-r0/installer.conf
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@ -1,2 +1,3 @@
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off"