Re: [PATCH v8 09/27] mm/mmap: Prevent Shadow Stack VMA merges

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Subject: Re: [PATCH v8 09/27] mm/mmap: Prevent Shadow Stack VMA merges
From: Dave Hansen <dave.hansen@xxxxxxxxx>
Date: Tue, 13 Aug 2019 15:34:00 -0700
In-reply-to: <20190813205225.12032-10-yu-cheng.yu@intel.com>
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References: <20190813205225.12032-1-yu-cheng.yu@intel.com> <20190813205225.12032-10-yu-cheng.yu@intel.com>
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On 8/13/19 1:52 PM, Yu-cheng Yu wrote:
> To prevent function call/return spills into the next shadow stack
> area, do not merge shadow stack areas.

How does this prevent call/return spills?

Follow-Ups:
- Re: [PATCH v8 09/27] mm/mmap: Prevent Shadow Stack VMA merges
  - From: Yu-cheng Yu

References:
- [PATCH v8 00/27] Control-flow Enforcement: Shadow Stack
  - From: Yu-cheng Yu
- [PATCH v8 09/27] mm/mmap: Prevent Shadow Stack VMA merges
  - From: Yu-cheng Yu

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