Re: [RFC v2 09/12] powerpc: Deliver SEGV signal on pkey violation.

2017-06-20 Thread Ram Pai
On Wed, Jun 21, 2017 at 08:48:20AM +0530, Anshuman Khandual wrote: > On 06/21/2017 05:26 AM, Ram Pai wrote: > > On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote: > >> On 06/17/2017 09:22 AM, Ram Pai wrote: > >>> The value of the AMR register at the time of exception > >>> is made a

Re: [RFC v2 09/12] powerpc: Deliver SEGV signal on pkey violation.

2017-06-20 Thread Anshuman Khandual
On 06/21/2017 05:26 AM, Ram Pai wrote: > On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote: >> On 06/17/2017 09:22 AM, Ram Pai wrote: >>> The value of the AMR register at the time of exception >>> is made available in gp_regs[PT_AMR] of the siginfo. >>> >>> This field can be used to

Re: [RFC v2 09/12] powerpc: Deliver SEGV signal on pkey violation.

2017-06-20 Thread Ram Pai
On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote: > On 06/17/2017 09:22 AM, Ram Pai wrote: > > The value of the AMR register at the time of exception > > is made available in gp_regs[PT_AMR] of the siginfo. > > > > This field can be used to reprogram the permission bits of > > any

Re: [RFC v2 09/12] powerpc: Deliver SEGV signal on pkey violation.

2017-06-19 Thread Anshuman Khandual
On 06/17/2017 09:22 AM, Ram Pai wrote: > The value of the AMR register at the time of exception > is made available in gp_regs[PT_AMR] of the siginfo. > > This field can be used to reprogram the permission bits of > any valid pkey. > > Similarly the value of the pkey, whose protection got violate

[RFC v2 09/12] powerpc: Deliver SEGV signal on pkey violation.

2017-06-16 Thread Ram Pai
The value of the AMR register at the time of exception is made available in gp_regs[PT_AMR] of the siginfo. This field can be used to reprogram the permission bits of any valid pkey. Similarly the value of the pkey, whose protection got violated, is made available at si_pkey field of the siginfo