* David Woodhouse <dwmw@xxxxxxxxxxxx> wrote: > Retpoline means the kernel is safe because it has no indirect branches. > But firmware isn't, so use IBRS for firmware calls if it's available. Ok, this approach looks good to me in principle, but: > --- a/arch/x86/include/asm/apm.h > +++ b/arch/x86/include/asm/apm.h > @@ -7,6 +7,8 @@ > #ifndef _ASM_X86_MACH_DEFAULT_APM_H > #define _ASM_X86_MACH_DEFAULT_APM_H > > +#include <asm/spec_ctrl.h> I cannot see this header file upstream anywhere, nor in any other patch in my mbox - is there some dependency that has to be applied first? Thanks, Ingo