[rds-devel] [PATCH v2] module: Make sure relocations are applied to the per-CPU section

[Peter Zijlstra]

On Thu, Jun 05, 2025 at 03:44:23PM +0200, Petr Pavlu wrote:

> For instance:
> 
> 	/*
> 	 * Don't bother with non-allocated sections.
> 	 *
> 	 * An exception is the percpu section, which has separate allocations
> 	 * for individual CPUs. We relocate the percpu section in the initial
> 	 * ELF template and subsequently copy it to the per-CPU destinations.
> 	 */
> 	if (!(info->sechdrs[infosec].sh_flags & SHF_ALLOC) &&
> 	    infosec != info->index.pcpu)
> 		continue;

Right, and pcpu is a data section and should not have relative
relocations, only absolute.

So copying things should not be a problem.