Hi,
I am working with an i.MX6DL platform. HAB is enabled and the software platform is Linux booting a chain of trust. ROM->SPL->u-boot->FIT image->dm-verity(ext4 on emmc). The kernel version is 4.20. We experience a huge degradation of the read performance from the emmc when dm-verity is enabled. We are measuring speeds that are about ten times longer with dm-verity enabled. We were expecting some performance degradation caused by dm-verity but not that large. Is this reasonable results or is something miss configured?
Can the CAAM module be used in some way to speed up dm-verity or can that only be uses with encrypted file systems? CAAM is now disabled in kernel.
Best regards
Per Örbäck
