Re: [patch 3/3] x86_64, cpa: use only text section in set_kernel_text_rw/ro

[Steven Rostedt <rostedt@goodmis.org>]

On Fri, 2009-10-30 at 11:17 -0800, Suresh Siddha wrote:
> On Wed, 2009-10-28 at 19:06 -0700, Steven Rostedt wrote:
> > On Wed, 2009-10-28 at 18:46 -0800, Suresh Siddha wrote:
> > > plain text document attachment (fix_kernel_text_ro_rw.patch)
> > > set_kernel_text_rw()/set_kernel_text_ro() are marking pages starting
> > > from _text to __start_rodata as RW or RO.
> > > 
> > > With CONFIG_DEBUG_RODATA, there might be free pages (associated with
> > > padding the sections to 2MB large page boundary) between text
> > > and rodata sections that are given back to page allocator. So we should
> > > use only use the start (__text) and end (__stop___ex_table) of the
> > > text section in set_kernel_text_rw()/set_kernel_text_ro().
> > > 
> > > Cc: Steven Rostedt <rostedt@goodmis.org>
> > > Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
> > > ---
> > >  
> > 
> > I'll go ahead and test this to make sure it does not bust ftrace with an
> > allyesconfig.
> 
> Steve, Good to go?

Yep. Sorry, during the testing I hit the jprobe vs function graph bug
and got distracted. But as for this patch set ...

Tested-by: Steven Rostedt <rostedt@goodmis.org>

Thanks,

-- Steve

> 
> If so, Ingo can you please consider this patchset?