On Mon, Apr 02, 2018 at 02:08:13PM -0400, Nicolas Pitre wrote: > On Mon, 2 Apr 2018, Abbott Liu wrote: > > > index c79b829..20161e2 100644 > > --- a/arch/arm/kernel/head-common.S > > +++ b/arch/arm/kernel/head-common.S > > @@ -115,6 +115,9 @@ __mmap_switched: > > str r8, [r2] @ Save atags pointer > > cmp r3, #0 > > strne r10, [r3] @ Save control register values > > +#ifdef CONFIG_KASAN > > + bl kasan_early_init > > +#endif > > mov lr, #0 > > b start_kernel > > ENDPROC(__mmap_switched) > > Would be better if lr was cleared before calling kasan_early_init. No. The code is correct - please remember that "bl" writes to LR. The point of clearing LR here is to ensure that start_kernel is called with a zero link register, which it won't be if kasan_early_init is moved after it. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up According to speedtest.net: 8.21Mbps down 510kbps up -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
