Messages in this thread | | | Date | Thu, 8 Mar 2018 10:25:17 -0800 | From | Ram Pai <> | Subject | mm, x86, powerpc: pkey semantics for key-0 ? |
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Dave,
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 key-0.
I do not see a reason why it must be blocked.
Thoughts? RP
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