I see. Thank you. Regards, Hon -----Original Message----- From: Florian Weimer <fweimer@xxxxxxxxxx> Sent: Monday, September 13, 2021 12:51 PM To: HON LUU <hon@xxxxxxxxxxxxxxxx> Cc: Segher Boessenkool <segher@xxxxxxxxxxxxxxxxxxx>; gcc-help@xxxxxxxxxxx Subject: Re: gcc question * HON LUU: > I build "device driver code" in userspace code, but using the same > headers from kernel source code. > > In the driver code, we include "linux/pci.h" header, and through > include chain arch_static_branch() got pulling through inline > functions. You need to do replace arch_static_branch with something else. It cannot be used in userspace. Thanks, Florian
