mm, x86, powerpc: pkey semantics for key-0 ?
linuxram at us.ibm.com
Fri Mar 9 05:25:17 AEDT 2018
Is there a reason why the default key; key-0, is not allowed to be
explicitly associated with pages using pkey_mprotect()?
I see valid usecases where an application may initially want to
associate an address-range with some key and latter choose to revert to
its initial state, by associating key-0. However our implementation
(both x86 and power) do not allow pkey_mprotect() to be called with
I do not see a reason why it must be blocked.
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