Arm-smmu context faults with kernel 5.15.59

Hi

I’ve booted alpine linux 3.16.2 via uefi (kernel 5.15.59 lts). The kernel log is getting a constant stream of arm-smmu context faults and the cpus are quite busy dealing with all the irqs from it.
It seems to start here:

[    0.118607] fsl_mc_bus NXP0008:00: Adding to iommu group 0
[    0.118832] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080bffee0, fsynr=0x360010, cbfrsynra=0x4000, cb=0
[    0.118851] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118858] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118864] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118870] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118876] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118882] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118887] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118893] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.118899] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0
[    0.448671] Freeing initrd memory: 14040K
[    0.619018] fsl_mc_bus NXP0008:00: mc_get_version() failed with error -110
[    0.619138] fsl_mc_bus: probe of NXP0008:00 failed with error -110

After that it’s just a constant stream of these messages:

[    5.119427] arm_smmu_context_fault: 2359451 callbacks suppressed
[    5.119437] arm-smmu arm-smmu.0.auto: Unhandled context fault: fsr=0x402, iova=0x2080000100, fsynr=0x360040, cbfrsynra=0x4000, cb=0

I also get the same error when booting ubuntu-22.04.1 via uefi. Sorry if the above isn’t very helpful.

Thanks in advance.

all kernels that are not from our github repo in the -cex7 branches require the kernel commandline option iommu.passthrough=1 Linux 6.0 has finally merged the IORT RMR patches needed for the SMMU to work properly with the network packet processor, but will require a new firmware release.

Greetings,

Linux 6.0 was released. I am unable to find a new UEFI release for the board which provides the necessary data structures the kernel expects. Was this new firmware released? If not, is there a time frame for it? Thank you.

Cheers,
Orlando.

In the near future, but can’t put an exact date on it. edk2 firmware is on hold until the SystemReady IR firmware is finalized.