Re: [PATCH 0/3] Rewrite x86/ftrace to use text_poke()

[Song Liu]

Hi Peter,

> On Aug 27, 2019, at 11:06 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> 
> Ftrace was one of the last W^X violators; these patches move it over to the
> generic text_poke() interface and thereby get rid of this oddity.
> 
> The first patch has been posted before and was/is part of my (in-progress)
> static_call and jump_label/jmp8 patch series; but is equally needed here.
> 
> The second patch cleans up the text_poke batching code, and the third converts
> ftrace.

Thanks for the patch. It solves the kernel-text-PMD-split issue. 

The only problem I found is, it is not easy to back port these patches to 5.2 
based kernel.  

Thanks,
Song

Tested-by: Song Liu <songliubraving@xxxxxx>