Re: [RFC PATCH] x86/mm/fault: Allow stack access below %rsp
From: Dave Hansen
Date: Fri Nov 02 2018 - 15:44:18 EST
On 11/2/18 12:40 PM, Waiman Long wrote:
> The 64k+ limit check is kind of arbitrary. So the check is now removed
> to just let expand_stack() decide if a segmentation fault should happen.
With the 64k check removed, what's the next limit that we bump into? Is
it just the stack_guard_gap space above the next-lowest VMA?