Subject: Re: [PATCH bpf-next 2/7] set_memory: introduce set_memory_[ro|x]_noalias

From: Peter Zijlstra <[email-masked]>
Date: Tue, 16 Nov 2021 09:00:51 +0100

On Mon, Nov 15, 2021 at 11:13:42PM -0800, Song Liu wrote:
> These allow setting ro/x for module_alloc() mapping, while leave the
> linear mapping rw/nx.

This needs a very strong rationale for *why*. How does this not
trivially circumvent W^X ?