Messages in this thread | | | Date | Thu, 24 Nov 2022 16:41:11 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH v2] x86: Avoid relocation information in final vmlinux |
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On Thu, Nov 24, 2022 at 02:33:28PM +0100, Petr Pavlu wrote: > If the before case is with RANDOMIZE_BASE=n and the after case is with > RANDOMIZE_BASE=y then it makes sense the resulting sizes are similar. With > RANDOMIZE_BASE=n, vmlinux is linked without --emit-relocs and so there will be > no relocation sections at all. With RANDOMIZE_BASE=y and my patch, the > sections get created but are stripped eventually. The increased size in the > second case is likely due to the logic to support the relocation process.
This is in both cases with your patch, once with RANDOMIZE_BASE=y and once with RANDOMIZE_BASE=n.
IOW, your patch actually makes my vmlinux bigger by 51K.
IOW, I cannot reproduce your
| Configuration | With relocs | Stripped relocs | | x86_64_defconfig | 70 MB | 43 MB |
claim, but not with a defconfig but with my specially tailored config.
I guess the next thing I'll try is without your patch.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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