Re: [RFC v6 21/62] powerpc: introduce execute-only pkey

On Fri, Jul 28, 2017 at 07:17:13PM -0300, Thiago Jung Bauermann wrote: > > Ram Pai writes: > > --- a/arch/powerpc/mm/pkeys.c > > +++ b/arch/powerpc/mm/pkeys.c > > @@ -97,3 +97,60 @@ int __arch_set_user_pkey_access(struct task_struct *tsk, > > int pkey, > > init_iamr(pkey, new_iamr_bits); > >

Re: [RFC v6 27/62] powerpc: helper to validate key-access permissions of a pte

On Fri, Jul 28, 2017 at 06:00:02PM -0300, Thiago Jung Bauermann wrote: > > Ram Pai writes: > > --- a/arch/powerpc/mm/pkeys.c > > +++ b/arch/powerpc/mm/pkeys.c > > @@ -201,3 +201,36 @@ int __arch_override_mprotect_pkey(struct > > vm_area_struct *vma, int prot, > > */ > > return vma_pkey(

Re: [RFC v6 15/62] powerpc: helper functions to initialize AMR, IAMR and UMOR registers

On Thu, Jul 27, 2017 at 05:40:44PM -0300, Thiago Jung Bauermann wrote: > > Ram Pai writes: > > > Introduce helper functions that can initialize the bits in the AMR, > > IAMR and UMOR register; the bits that correspond to the given pkey. > > > > Signed-off-by: Ram Pai > > s/UMOR/UAMOR/ here and

Re: [RFC v6 20/62] powerpc: store and restore the pkey state across context switches

On Thu, Jul 27, 2017 at 02:32:59PM -0300, Thiago Jung Bauermann wrote: > > Ram Pai writes: > > > Store and restore the AMR, IAMR and UMOR register state of the task > > before scheduling out and after scheduling in, respectively. > > > > Signed-off-by: Ram Pai > > s/UMOR/UAMOR/ > > > diff --g

Re: [RFC v6 19/62] powerpc: ability to create execute-disabled pkeys

On Thu, Jul 27, 2017 at 11:54:31AM -0300, Thiago Jung Bauermann wrote: > > Ram Pai writes: > > > --- a/arch/powerpc/include/asm/pkeys.h > > +++ b/arch/powerpc/include/asm/pkeys.h > > @@ -2,6 +2,18 @@ > > #define _ASM_PPC64_PKEYS_H > > > > extern bool pkey_inited; > > +/* override any generic P

Re: [RFC v6 17/62] powerpc: implementation for arch_set_user_pkey_access()

On Thu, Jul 27, 2017 at 11:15:36AM -0300, Thiago Jung Bauermann wrote: > > Ram Pai writes: > > @@ -113,10 +117,14 @@ static inline int arch_override_mprotect_pkey(struct > > vm_area_struct *vma, > > return 0; > > } > > > > +extern int __arch_set_user_pkey_access(struct task_struct *tsk, int

Re: [RFC v6 13/62] powerpc: track allocation status of all pkeys

On Thu, Jul 27, 2017 at 11:01:44AM -0300, Thiago Jung Bauermann wrote: > > Hello Ram, > > I'm still going through the patches and haven't formed a full picture of > the feature in my mind yet, so my comments today won't be particularly > insightful... > > But hopefully the comments that I curren

Re: [PATCH v2 02/10] drivers/hwmon/occ: Add command transport method for P8 and P9

-Controller-OCC-hwmon-driver/20170729-233004 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree