On 05/21/2015 11:51 PM, Andy Lutomirski wrote: >>> >>> #ifdef __KERNEL__ >>> + >>> +/* >>> + * early_idt_handlers is an array of entry points. For simplicity, it's >>> + * a real array. We allocate nine bytes for each entry: two one-byte >>> + * push instructions and a five-byte jump in the worst case. >>> + */ >>> +#define EARLY_IDT_HANDLER_STRIDE 9 >> >> So how come that two plus five equals nine? ;-) > > A "one-byte push" would be pretty impressive :) >
Well, non-REX register pushes are just one byte. However, these take an immediate constant. >> >> Ditto for the 64-bit side. > > Sounds good. I'll do all this tomorrow and resend. > Thank you! Since I trust you, I'll send you this in advance: Acked-by: H. Peter Anvin <h...@linux.intel.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
