08-13-2018, 11:59 AM
dukla2000,
I saw your comments:
At 4.4 the pcie & nvme initialisation is ready before the rootfs is mounted (even though I am booting off the SDcard).
At 4.18 the pcie & nvme initialisation only happens way after the rootfs is mounted.
To my best knowledge, it means Kernel -4.4 has pcie & nvme modules built into the Linux image, and Kernel -4.18 has pcie & nvme modules as external loadable modules (drivers).
Because we want rootfs on NVMe which plugged in PCIe slot, so both pcie & nvme need to be loaded before rootfs is mounted.
If Ayufan can compile Kernel -4.18 as the same way as his compiled Kernel -4.4, (hopefully in the final release version, he will do) then everything should work.
I saw your comments:
At 4.4 the pcie & nvme initialisation is ready before the rootfs is mounted (even though I am booting off the SDcard).
At 4.18 the pcie & nvme initialisation only happens way after the rootfs is mounted.
To my best knowledge, it means Kernel -4.4 has pcie & nvme modules built into the Linux image, and Kernel -4.18 has pcie & nvme modules as external loadable modules (drivers).
Because we want rootfs on NVMe which plugged in PCIe slot, so both pcie & nvme need to be loaded before rootfs is mounted.
If Ayufan can compile Kernel -4.18 as the same way as his compiled Kernel -4.4, (hopefully in the final release version, he will do) then everything should work.
