[Lesson05] RPi 4 system call not working about raspberry-pi-os HOT 3 CLOSED

This issue can also be resolved by loading the kernel code at address 0x80000 explicitly, by specifying

. = 0x80000;

as first line in SECTIONS in the linker.ld

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Do the function pointers in your sys_call_table point to the correct place at runtime? I mean since sys_call_table is initialized statically, if you didn't change the linker script or modify sys_call_table at runtime, it would not be pointing to the sys_* functions because rpi4 loads the kernel image at 0x80000

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Thanks for you quick response, I haven't changed the addresses of the sys_* functions. It is working now, after I changed it. Thank you!

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