On Tue, 29 Oct 2019, Mark Rutland wrote: > When we load a module, we have to perform some special work for a couple > of named sections. To do this, we iterate over all of the module's > sections, and perform work for each section we recognize. > > To make it easier to handle the unexpected absence of a section, and to > make the section-specific logic easer to read, let's factor the section s/easer/easier/ > search into a helper. Similar is already done in the core module loader, > and other architectures (and ideally we'd unify these in future). > > If we expect a module to have an ftrace trampoline section, but it > doesn't have one, we'll now reject loading the module. When > ARM64_MODULE_PLTS is selected, any correctly built module should have > one (and this is assumed by arm64's ftrace PLT code) and the absence of > such a section implies something has gone wrong at build time. > > Subsequent patches will make use of the new helper. > > Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx> > Reviewed-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> > Cc: Catalin Marinas <catalin.marinas@xxxxxxx> > Cc: James Morse <james.morse@xxxxxxx> > Cc: Will Deacon <will@xxxxxxxxxx> Reviewed-by: Miroslav Benes <mbenes@xxxxxxx> M
