On Wed, Sep 20, 2017 at 04:24:18PM -0500, Josh Poimboeuf wrote: > On Tue, Sep 19, 2017 at 06:37:39PM -0500, Miguel Bernal Marin wrote: > > Some warning were showed by objtool using gcc 7.2.0 > > > > kernel/locking/rwsem.o: warning: objtool: up_read()+0x11: call without > > frame pointer save/setup > > kernel/locking/rwsem.o: warning: objtool: up_write()+0x17: call without > > frame pointer save/setup > > kernel/locking/rwsem.o: warning: objtool: downgrade_write()+0x22: call > > without frame pointer save/setup > > > > which means gcc placed an inline asm function and its call instruction > > before > > the frame pointer setup. > > > > This series forces a stack frame to be created before the call instruction > > by listing the stack pointer as an output operand in the inline asm > > statement. > > > > Also to be easy to maintain and understand the operands from the extended > > assembler instructions were converted to named operands. > > I've got a patch going around which will change the way we do this, so > you'll probably need to do a v3 after my patch gets merged. I'll add > you to cc for the next revision. >
Ok, I will wait to see your changes merged. Thanks. > -- > Josh -- Regards, Miguel Bernal Marin Open Source Technology Center https://clearlinux.org Intel Corporation
