Peter Zijlstra wrote:
On Tue, May 24, 2022 at 04:01:48PM +0530, Naveen N. Rao wrote:
We need to know for sure either way. Nop'ing out the _mcount locations at
boot allows us to discover existing long branch trampolines. If we want to
avoid it, we need to note down those locations during build t
On Tue, May 24, 2022 at 04:01:48PM +0530, Naveen N. Rao wrote:
> We need to know for sure either way. Nop'ing out the _mcount locations at
> boot allows us to discover existing long branch trampolines. If we want to
> avoid it, we need to note down those locations during build time.
>
> Do you ha
Christophe Leroy wrote:
Le 24/05/2022 à 12:15, Naveen N. Rao a écrit :
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
Le 24/05/2022 à 12:15, Naveen N. Rao a écrit :
> 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 op
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 n
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
