Hi, We're attempting to build stable kernels with gcc9. 4.19.x fails to build with gcc9 as 146448524bdd ("s390/jump_label: Use "jdd" constraint on gcc9") is missing. This doesn't apply cleanly to 4.19.x as it needs changes from 13ddb52c165b ("s390/jump_label: Switch to relative references") Which is better, taking both 13ddb52c165b and 146448524bdd or doing a backport of 146448524bdd? Thanks, Laura