Re: [PATCH bpf-next v2 0/5] execmem_alloc for BPF programs

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On Tue, Nov 15, 2022 at 9:34 AM Edgecombe, Rick P
<rick.p.edgecombe@xxxxxxxxx> wrote:
>
> On Mon, 2022-11-14 at 17:30 -0800, Song Liu wrote:
> > Currently, I have got the following action items for v3:
> > 1. Add unify API to allocate text memory to motivation;
> > 2. Update Documentation/x86/x86_64/mm.rst;
> > 3. Allow none PMD_SIZE allocation for powerpc.
>
> So what do we think about supporting the fallback mechanism for the
> first version, like:
>
> https://lore.kernel.org/all/9e59a4e8b6f071cf380b9843cdf1e9160f798255.camel@xxxxxxxxx/
>
> It helps the (1) story by actually being usable by non-text_poke()
> architectures.

I personally think this might be a good idea. We will need this when we use
execmem_alloc for modules. But I haven't got a chance to look at module code in
great detail. I was thinking of adding this logic with changes in module code.

Thanks,
Song




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