Re: [RFC PATCH 7/7 v1]powerpc: Deliver SEGV signal on protection key violation.

On Fri, 2017-06-16 at 14:50 +0530, Anshuman Khandual wrote:

On 06/06/2017 06:35 AM, Ram Pai wrote:

quoted

The value of the AMR register at the time of the exception
is made available in gp_regs[PT_AMR] of the siginfo.

But its already available there in uctxt->uc_mcontext.regs->amr
while inside the signal delivery context in the user space. The
pt_regs already got updated with new AMR register. Then why we
need gp_regs to also contain AMR as well ?

Also changing gp_regs layout/size is a major ABI issue...

Ben.