Re: [PATCH bpf-next v4 1/6] vmalloc: introduce execmem_alloc, execmem_free, and execmem_fill

[Song Liu <song@xxxxxxxxxx>]

On Mon, Nov 21, 2022 at 8:55 AM Christoph Hellwig <hch@xxxxxx> wrote:
>
> On Mon, Nov 21, 2022 at 04:52:24PM +0100, Daniel Borkmann wrote:
> >> +void *execmem_fill(void *dst, void *src, size_t len)
> >> +{
> >> +    return ERR_PTR(-EOPNOTSUPP);
> >> +}
> >
> > Don't they need EXPORT_SYMBOL_GPL, too?
>
> None of these should be exported.  Modular code has absolutely no
> business creating executable mappings.

I added these exports for test_vmalloc.ko. Is there a way to only export
them to test_vmalloc.ko but nothing else?

Thanks,
Song