Thanks Christophe
> > How do I appropriately alter a ppc64 kernel to have entry point 0x0? After working with the issue further, I determined my original question was ill-formed because I had an incomplete understanding. > Even with the CONFIG_KERNEL_START you can't expect any kernel to have a > virtual start address of 0, because the KERNEL needs to be above user space. > > But you shouldn't need that. It is the role of the loader to set the MMU > so that the kernel is running with the correct virtual address. > > I don't understand why you need the virtual starting address of vmlinux > to be 0x0. Indeed, it doesn't make sense for kernel start address 0x0. As I am trying to make a stand-in for another kernel image without changing the U-Boot load address, I saw that the original vmlinux ELF header had Entry point address: 0x0 But critically, as I now understand, it also had Type: DYN , not EXEC What I determined is that I needed CONFIG_RELOCATABLE=y; I did not need to alter the load address. After making a relocatable kernel, I was able to get it to boot on my hardware. > > Here is what I get with ppc64e_defconfig with v6.18-rc1: > Thank you for taking the time to find this for me. Kind regards, Alex
