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,
dave.hansen@linux.intel.com, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, kernel-team@fb.com
Subject: Re: [PATCH bpf-next 2/7] set_memory: introduce set_memory_[ro|x]_noalias
Date: Tue, 16 Nov 2021 09:00:51 +0100 [thread overview]
Message-ID: <20211116080051.GU174703@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20211116071347.520327-3-songliubraving@fb.com>
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 ?
next parent reply other threads:[~2021-11-16 8:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211116071347.520327-1-songliubraving@fb.com>
[not found] ` <20211116071347.520327-3-songliubraving@fb.com>
2021-11-16 8:00 ` Peter Zijlstra [this message]
2021-11-17 21:36 ` [PATCH bpf-next 2/7] set_memory: introduce set_memory_[ro|x]_noalias Song Liu
2021-11-17 22:01 ` Peter Zijlstra
2021-11-17 23:57 ` Song Liu
2021-11-18 0:11 ` Song Liu
2021-11-18 7:54 ` Peter Zijlstra
2021-11-18 17:16 ` Song Liu
2021-11-18 18:28 ` Peter Zijlstra
2021-11-18 18:39 ` Song Liu
2021-11-18 18:58 ` Peter Zijlstra
2021-11-19 4:14 ` Song Liu
2021-11-19 9:35 ` Peter Zijlstra
2021-11-19 16:06 ` Johannes Weiner
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