Christophe Leroy wrote:
Le 23/05/2022 à 19:55, Sathvika Vasireddy a écrit :
Architectures can select HAVE_NOP_MCOUNT if they choose
to nop out mcount call sites. If that config option is
selected, then --mnop is passed as an option to objtool,
along with --mcount.
Is there a reason not to nop out mcount call sites on powerpc as well ?
Yes, if there are functions that are out of range of _mcount(), then the
linker would have inserted long branch trampolines. We detect such cases
during boot. But, if we nop out the _mcount call sites during build
time, we will need some other way to identify these.
- Naveen
