Hi, On Tue, Dec 13, 2016 at 10:02:26AM +0000, Russell King - ARM Linux wrote: > On Sun, Dec 11, 2016 at 06:42:55PM +0530, Afzal Mohammed wrote:
> > bic r0, r0, #CR_V > > #endif > > mcr p15, 0, r0, c1, c0, 0 @ write control reg > > + > > +#ifdef CONFIG_REMAP_VECTORS_TO_RAM > > + mov r3, #CONFIG_VECTORS_BASE @ read VECTORS_BASE > > + mcr p15, 0, r3, c12, c0, 0 @ write to VBAR > > +#endif > > + > Is there really any need to do this in head.S ? Seeing the high vector configuration done here, pounced upon it :) > I believe it's > entirely possible to do it later - arch/arm/mm/nommu.c:paging_init(). > > Also, if the region setup for the vectors was moved as well, it would > then be possible to check the ID registers to determine whether this > is supported, and make the decision where to locate the vectors base > more dynamically. i will look into it. Regards afzal