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Date:   Mon, 11 Jul 2022 21:24:04 -0700
From:   Luis Chamberlain <mcgrof@kernel.org>
To:     Song Liu <songliubraving@fb.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Thomas Gleixner <tglx@linutronix.de>,
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        Masami Hiramatsu <mhiramat@kernel.org>,
        "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
        "David S. Miller" <davem@davemloft.net>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
        Kees Cook <keescook@chromium.org>
Cc:     Song Liu <song@kernel.org>, bpf <bpf@vger.kernel.org>,
        Christoph Hellwig <hch@infradead.org>,
        Davidlohr Bueso <dave@stgolabs.net>,
        lkml <linux-kernel@vger.kernel.org>,
        Linux-MM <linux-mm@kvack.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
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        "rick.p.edgecombe@intel.com" <rick.p.edgecombe@intel.com>,
        "linux-modules@vger.kernel.org" <linux-modules@vger.kernel.org>
Subject: Re: [PATCH v6 bpf-next 0/5] bpf_prog_pack followup
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On Mon, Jul 11, 2022 at 09:18:53PM -0700, Luis Chamberlain wrote:
> A vmalloc_ro_exec() by definition would imply a text_poke().
> 
> Can kprobes, ftrace and modules use it too? It would be nice
> so to not have to deal with the loose semantics on the user to
> have to use set_vm_flush_reset_perms() on ro+x later, but
> I think this can be addressed separately on a case by case basis.

And who knows, if they can, and can also share a huge page allocator
then they may also share similar performance improvements.

  Luis