Messages in this thread | | | Date | Wed, 23 Nov 2022 09:45:37 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v2] x86: Avoid relocation information in final vmlinux |
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On November 23, 2022 7:54:29 AM PST, Borislav Petkov <bp@alien8.de> wrote: >On Wed, Nov 23, 2022 at 04:43:20PM +0100, Petr Pavlu wrote: >> The only post-link analysis tool in this case should be arch/x86/tools/relocs. >> It produces a vmlinux.relocs file which is appended to vmlinux.bin. This is >> all internal to the Linux build. I'm not aware of any external tooling, such >> as kernel debuggers, that would require this relocation information in >> vmlinux. > >It would be good to know why --emit-relocs was added in the first place >- that might give us a hint. Lemme talk to Micha. > >> The size command used in your example includes only allocatable code, data and >> bss sections. It does not show size of any relocation sections. > >This: > >361M vmlinux.before >361M vmlinux.after > >is simple ls output. > >Maybe I need something else enabled in my .config which would show this >significant difference *and* *explain* it. > >Thx. >
The real question is: why does anyone care about the size of the vmlinux file specifically?
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