On Fri, Sep 25, 2020 at 12:50:23PM +0100, Vincenzo Frascino wrote: > On 9/25/20 12:34 PM, Catalin Marinas wrote: > > On Fri, Sep 25, 2020 at 12:50:36AM +0200, Andrey Konovalov wrote: > >> + /* > >> + * Calculate and set the exclude mask preserving > >> + * the RRND (bit[16]) setting. > >> + */ > >> + mrs_s \tmp2, SYS_GCR_EL1 > >> + bfi \tmp2, \tmp, #0, #16 > >> + msr_s SYS_GCR_EL1, \tmp2 > >> + isb > >> +1: > >> +#endif > >> + .endm > >> + > >> + .macro mte_set_kernel_gcr, tsk, tmp, tmp2 > > > > What's the point of a 'tsk' argument here? > > It is unused. I kept the interface same in between kernel and user. > I can either add a comment or remove it. Which one do you prefer? Please remove it. Having the same interface is more confusing since you have a single kernel gcr_excl but multiple user gcr_excl. -- Catalin
