On Sat, May 28, 2022 at 3:01 PM Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx> wrote: > On Sat, May 28, 2022 at 11:07 AM Ard Biesheuvel <ardb@xxxxxxxxxx> wrote: > In file included from ./include/linux/irqflags.h:17, > from ./arch/arm/include/asm/bitops.h:28, > from ./include/linux/bitops.h:33, > from ./include/linux/log2.h:12, > from kernel/bounds.c:13: > ./arch/arm/include/asm/percpu.h: In function ‘__my_cpu_offset’: > ./arch/arm/include/asm/percpu.h:32:9: error: ‘__per_cpu_offset’ > undeclared (first use in this function); did you mean > ‘__my_cpu_offset’? > 32 | return __per_cpu_offset[0]; > | ^~~~~~~~~~~~~~~~ > | __my_cpu_offset > ./arch/arm/include/asm/percpu.h:32:9: note: each undeclared identifier > is reported only once for each function it appears in I think you just missed the line in my patch that adds the "extern unsigned long __per_cpu_offset[];" variable declaration. Arnd