Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [PATCH 11/33] i386 boot: Add an ELF header to bzImage | Date | Tue, 01 Aug 2006 20:38:01 -0600 |
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Jeremy Fitzhardinge <jeremy@goop.org> writes:
> Eric W. Biederman wrote: >> +.macro note name, type >> + .balign 4 >> + .int 2f - 1f # n_namesz >> + .int 4f - 3f # n_descsz >> + .int \type # n_type >> + .balign 4 >> +1: .asciz "\name" >> +2: .balign 4 >> +3: >> +.endm >> +.macro enote >> +4: .balign 4 >> +.endm >> > > This is very similar to the macro I introduced in the Paravirt note segment > patch. Do think they should be made common?
Yes. At the point of merging these two approaches I think the notes should just be put into vmlinux and copied either into the ELF header or more likely into a segment that build.c tacks onto the kernel.
It is such a small piece of my overall picture I wasn't really looking at that.
>> +/* Elf notes to help bootloaders identify what program they are booting. >> + */ >> + >> +/* Standardized Elf image notes for booting... The name for all of these is > ELFBoot */ >> +#define ELF_NOTE_BOOT "ELFBoot" >> > > I wonder if this should be something to suggest its Linux-specific? Or do you > see this being used by a wider audience?
This note is used in etherboot and LinuxBIOS right now so it isn't terribly linux specific. And whatever the virtues of it's name it is actually in use.
I had a preliminary RFC for using these in a winder context at one point but I ran out of energy for pushing it.
I think the information in those note headers is interesting beyond that I really don't much care.
Eric
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