On Fri, 8 Sep 2017 15:44:51 -0700 Ram Pai <linux...@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 <linux...@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.
