[PATCH 1/3] powerpc/code-patching: work around code patching verification in patching tests

[Nicholas Piggin]

Excerpts from Christophe Leroy's message of November 26, 2021 4:34 pm:
> 
> 
> Le 26/11/2021 à 04:22, Nicholas Piggin a écrit :
>> Code patching tests patch the stack and (non-module) vmalloc space now,
>> which falls afoul of the new address check.
>> 
>> The stack patching can easily be fixed, but the vmalloc patching is more
>> difficult. For now, add an ugly workaround to skip the check while the
>> test code is running.
> 
> This really looks hacky.
> 
> To skip the test, you can call do_patch_instruction() instead of calling 
> patch_instruction().

And make a do_patch_branch function. I thought about it, and thought 
this is sligtly easier.

Thanks,
Nick