[PATCH 03/25] powerpc: track allocation status of all pkeys

[Balbir Singh]

On Fri,  8 Sep 2017 15:44:51 -0700
Ram Pai <linuxram at us.ibm.com> wrote:

> Total 32 keys are available on power7 and above. However
> pkey 0,1 are reserved. So effectively we  have  30 pkeys.
> 
> On 4K kernels, we do not  have  5  bits  in  the  PTE to
> represent  all the keys; we only have 3bits.Two of those
> keys are reserved; pkey 0 and pkey 1. So effectively  we
> have 6 pkeys.
> 
> This patch keeps track of reserved keys, allocated  keys
> and keys that are currently free.
> 
> Also it  adds  skeletal  functions  and macros, that the
> architecture-independent code expects to be available.
> 
> Signed-off-by: Ram Pai <linuxram at us.ibm.com>

I ended up reviewing v7 of the patch. Is this v8?
I think the comments still apply to this revision

Balbir Singh.