Re: [PATCH bpf-next 2/7] set_memory: introduce set_memory_[ro|x]_noalias
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-11-16 08:01:11
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bpf
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 ?