"Invalid signature" issue on dev kernel launch

[Valdis Kl=?utf-8?Q?=c4=93?=tnieks]

On Wed, 24 Mar 2021 09:21:31 -0400, Aruna Hewapathirane said:

> > And all of that has to fit in 8K of stack. That's why we warn when things have
> > a large stack frame entry.

> I still don't understand why the 8K barrier ? Why can't we make it say 16K ?

The issue is that then you need 4 contiguous pages for fork() to succeed, which can
become a problem if memory gets fragmented.  The chances of being able to find
2 contiguous pages are *much* higher than 4.

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