Comment 38 for bug 1933301

5.13 hwe with cma=128M and patch 3b7e7c389812 looks good[1].

[1]

ubuntu@segers:~$ uname -a; dmesg | grep -i fail ; echo; dmesg | grep -i cma
Linux segers 5.13.0-22-generic #22~20.04.1~d20220104t205635~3b7e7c389812 SMP Tue Jan 4 20:57:29 aarch64 aarch64 aarch64 GNU/Linux
[ 13.835200] dw_spi_mmio HISI0173:00: DMA init failed
[ 19.189114] sas: Enter sas_scsi_recover_host busy: 0 failed: 0
[ 19.551451] sas: --- Exit sas_scsi_recover_host: busy: 0 failed: 0 tries: 1
[ 19.583481] sas: Enter sas_scsi_recover_host busy: 0 failed: 0
[ 19.962821] sas: --- Exit sas_scsi_recover_host: busy: 0 failed: 0 tries: 1
[ 22.561053] hisi_sec2 0000:75:00.0: Failed to enable PASID
[ 22.588807] hisi_sec2 0000:b5:00.0: Failed to enable PASID

[ 0.000000] cma: Reserved 128 MiB at 0x0000000078000000
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.13.0-22-generic root=UUID=e70c736e-0fc9-4459-9e23-d18d2fafb1bb ro sysrq_always_enabled cma=128M
[ 0.000000] Memory: 131221096K/134213440K available (15744K kernel code, 3654K rwdata, 13604K rodata, 7936K init, 1153K bss, 2861272K reserved, 131072K cma-reserved)