Re: [PATCH 4/7] ftrace, PPC: use probe_kernel API to modify code

On Mon, 17 Nov 2008, Paul Mackerras wrote: > Steven Rostedt writes: > > > Impact: use cleaner probe_kernel API over assembly > > > > Using probe_kernel_read/write interface is a much cleaner approach > > than the current assembly version. > > Possibly naive question: how is it possible for the

Re: [PATCH 4/7] ftrace, PPC: use probe_kernel API to modify code

Steven Rostedt writes: > Impact: use cleaner probe_kernel API over assembly > > Using probe_kernel_read/write interface is a much cleaner approach > than the current assembly version. Possibly naive question: how is it possible for the accesses to the instructions to fault, given that we are cal