Re: [PATCH v12 8/8] x86: Disallow vsyscall emulation when CET is enabled

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On 9/18/20 12:23 PM, Yu-cheng Yu wrote:
> Emulation of the legacy vsyscall page is required by some programs
> built before 2013.  Newer programs after 2013 don't use it.
> Disable vsyscall emulation when Control-flow Enforcement (CET) is
> enabled to enhance security.

How does this "enhance security"?

What is the connection between vsyscall emulation and CET?



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