[PATCH v3 21/36] arm64/mm: Implement map_shadow_stack()

[Mark Brown]

On Tue, Aug 01, 2023 at 08:28:14PM +0300, Mike Rapoport wrote:
> On Tue, Aug 01, 2023 at 05:07:00PM +0000, Edgecombe, Rick P wrote:

> > So the question is not what mode should arm support, but should we have
> > the flags match between x86 and ARM?

> What if the flag will be called, say, SHADOW_STACK_DEFAULT_INIT?
> Then each arch can push whatever it likes to and from the userspace
> perspective the shadow stack will have some basic init state, no matter
> what architecture it is.

x86 might have some fun with that and the existing userspace binaries...
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