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Date:   Tue, 16 Nov 2021 09:00:51 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Song Liu <songliubraving@fb.com>
Cc:     x86@kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org,
        tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
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Subject: Re: [PATCH bpf-next 2/7] set_memory: introduce
 set_memory_[ro|x]_noalias
Message-ID: <20211116080051.GU174703@worktop.programming.kicks-ass.net>
References: <20211116071347.520327-1-songliubraving@fb.com>
 <20211116071347.520327-3-songliubraving@fb.com>
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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 ?