On Tue, Oct 6, 2020 at 1:11 PM Valdis Klētnieks <valdis.kletnieks@xxxxxx> wrote: > > On Tue, 06 Oct 2020 08:17:44 -0500, William Tambe said: > > How can I modify Makefile such that when vmlinux is created, following > > command is run on vmlinux to make section .bss PROGBITS: > > objcopy --set-section-flags .bss=alloc,load,contents > > Remember - vmlinux isn't going to be loaded by the userspace loader, > but rather by a bootstrap loader. So those flags probably don't actually > do what you think they do. We have a loader that loads vmlinux.bin (created from vmlinux using objcopy -O binary), however if section .bss is not PROGBITS, vmlinux.bin does not include that space, which the loader will not reserve; by allocating that space in vmlinux.bin the loader also reserves that space. To solve the problem we are looking to make section .bss PROBGITS using objcopy --set-section-flags .bss=alloc,load,contents , but it is not trivial how to modify the Linux Makefile to achieve that. > > For that matter, what *do* you think they do, and what problem are you > trying to solve with them? > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
