On Fri, Nov 01, 2024 at 09:50:27PM +0000, Edgecombe, Rick P wrote: > On Wed, 2024-10-16 at 14:57 -0700, Deepak Gupta wrote: > > - * The maximum distance INCSSP can move the SSP is 2040 bytes, before > > - * it would read the memory. Therefore a single page gap will be enough > > - * to prevent any operation from shifting the SSP to an adjacent stack, > > - * since it would have to land in the gap at least once, causing a > > - * fault. > I want to take a deeper look at this series once I can apply and test it, but > can we maybe make this comment more generic and keep it? I think it is similar > reasoning for arm (?), is there anything situation like this for risc-v? Or > rather, why does risc-v have the guard gaps? Yes, for arm64 you can only move the pointer in single frames so a single page is enough.
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