Use of valgrind with microthreading

Hi all,


I am writing my own C++ microthreading library. At the very first 
switch, I get the following message from Valgrind:

==15122== Warning: client switching stacks?  SP change: 0x1ffeffe788 --> 
0x75d0f80
==15122==          to suppress, use: --max-stackframe=137298630664 or 
greater


I understand that valgrind needs to know where the stack starts and 
ends. I am wondering whether is any way I can tell it that information. 
Since I'm writing the library, what I was thinking was compiling the 
library with a special flag saying "you're running with valgrind", and 
then have my library call a valgrind function that says "This is the new 
stack range, this is the old one".


Is there such a thing? If so, how do I interface with it?


Thank you,

Shachar


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