Re: [RFC v2 03/12] powerpc: Implement sys_pkey_alloc and sys_pkey_free system call.

2017-06-20 Thread Ram Pai
On Mon, Jun 19, 2017 at 10:18:01PM +1000, Michael Ellerman wrote: > Hi Ram, > > Ram Pai writes: > > Sys_pkey_alloc() allocates and returns available pkey > > Sys_pkey_free() frees up the pkey. > > > > Total 32 keys are supported on powerpc. However pkey 0,1 and 31 > > are reserved. So effectivel

Re: [RFC v2 03/12] powerpc: Implement sys_pkey_alloc and sys_pkey_free system call.

2017-06-19 Thread Michael Ellerman
Hi Ram, Ram Pai writes: > Sys_pkey_alloc() allocates and returns available pkey > Sys_pkey_free() frees up the pkey. > > Total 32 keys are supported on powerpc. However pkey 0,1 and 31 > are reserved. So effectively we have 29 pkeys. > > Signed-off-by: Ram Pai > --- > include/linux/mm.h

[RFC v2 03/12] powerpc: Implement sys_pkey_alloc and sys_pkey_free system call.

2017-06-16 Thread Ram Pai
Sys_pkey_alloc() allocates and returns available pkey Sys_pkey_free() frees up the pkey. Total 32 keys are supported on powerpc. However pkey 0,1 and 31 are reserved. So effectively we have 29 pkeys. Signed-off-by: Ram Pai --- arch/powerpc/Kconfig | 15 arch/power