On Thu, Nov 27, 2008 at 12:13:43PM +0200, Avi Kivity wrote: > H. Peter Anvin wrote: > > > >>I suspect we could get it down to three bytes, by sharing the last > >>byte of the four-byte call sequence with the first byte of the next: > >> > >> 66 e8 ff 66 e8 fc 66 e8 f9 66 e8 f6 ... > >> > >>Every three bytes a new stub begins; it's a four-byte call to offset > >>0x6703 relative to the beginning of the first stub. > >> > >>Can anyone better 24 bits/stub? > > > >On the entirely silly level... > > > >CC xx > > Nice. Can actually go to zero, by pointing the IDT at (unmapped_area + > vector), and deducing the vector in the page fault handler from cr2.
That would be still one byte, otherwise you wouldn't get a unique index. -Andi -- [EMAIL PROTECTED] _______________________________________________ Lguest mailing list [email protected] https://ozlabs.org/mailman/listinfo/lguest
