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Re: [Xen-devel] [PATCH RFC] x86/traps: Improve hypervisor stack overflow detection

>>> On 19.11.15 at 18:36, <andrew.cooper3@xxxxxxxxxx> wrote:
> Another question is whether, given that the sample above moves the stack
> by more than 4k, it would be wise to also guard the 4th currently-spare
> page between the primary stack and IST stacks.

I'm not sure that would be worth it - we just can't preclude every
eventuality. What if another compiler decided to move the stack
pointer by more than 8k?


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