# Re: \[PATCH v2 0/4\] \[RFC\] Implement Trampoline File Descriptor

- From: Solar Designer \<hidden\>
- Date: 2020-09-23 18:21:47 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2020/09/189480
- Thread: https://ratatoskr.run/linux-api/2020/09/189384/t.md

```text
On Wed, Sep 23, 2020 at 08:00:07PM +0200, Solar Designer wrote:
> A couple of other things Brad kindly pointed out:
> 
> SELinux already has similar protections (execmem, execmod):
> 
> http://lkml.iu.edu/hypermail/linux/kernel/0508.2/0194.html
> https://danwalsh.livejournal.com/6117.html

Actually, that's right in Madhavan's "Introduction": "LSMs such as
SELinux implement W^X" and "The W^X implementation today is not
complete."  I'm sorry I jumped into this thread out of context.

Alexander
```