Le 23/02/2018 à 14:55, Joerg Sonnenberger a écrit :
On Fri, Feb 23, 2018 at 01:12:13PM +0100, Maxime Villard wrote:Heck, it wasn't even discussed on tech-kern.It was discussed on tech-kern.No, you made some wild claims about GDB behavior which are wrong and without context. That's not a discussion about a code change.
Pure idiocy, go back read the thread.
If anything, this should be done in the kernel config next to the -fno-omit-frame-potiner setting. This is a concession to DDB only, unlike i.e. -mcmode=kernel, it is not necessary for ABI reasons or correctness,Moving -fno-shrink-wrap next to -fno-omit-frame-pointer did not fix the issues. That is to say, the frame was _not_ pushed at the beginning of the functions.Then figure out why not. Placing random pessimisation options all over the place is wrong.
I will revert my change until I find something better (and compatible with clang). Maxime