On Tue, Jan 23, 2018 at 03:57:39PM +0000, David Woodhouse wrote: > On Tue, 2018-01-23 at 16:42 +0100, Peter Zijlstra wrote: > > drivers/watchdog/.tmp_hpwdt.o: warning: objtool: .text+0x24: indirect call > > found in RETPOLINE build > > You're calling into BIOS there. Not a lot of point in protecting that > one. This is one of the cases where we were saying you needed to turn > on IBRS to have complete protection, even with retpoline. >
That code looked entirely dodgy, which is why I left it. I can easily add the ANNOTATE_RETPOLINE_SAFE thing to shut it up, but given it is an actual problem, maybe we should just keep it?
