Vivek Goyal <vgoyal at redhat.com> writes: > Hi Eric, > > I am looking at kexec ELF loader code and wondering what are arg style > options. > > #define ARG_STYLE_ELF 0 > #define ARG_STYLE_LINUX 1 > #define ARG_STYLE_NONE 2 > > > I have looked at them many a times but frankly never fully understood > what do they represent and what's the intention behind them. Can you > please elaborate a bit on this. There is no standard of what kind of arguments a standalone ELF executable will receive from a bootloader. Which means that in practice to support different OS's you either need to pass nothing or make something up. ARG_STYLE_ELF is my own invention and a sad attempt at coming up with an OS agnostic standard. ARG_STYLE_LINUX is an ELF image receiving the same arguments as the linux kernel. It is a mess but it is reasonably well documented. ARG_STYLE_NONE should just be simpley passing nothing into an ELF image. When moving the code into the kernel we should be able to simply use ARG_STYLE_LINUX. We can revist the other cases if there is ever a need. The problem is real but I don't know if it needs to be solved any time soon. Eric
