Messages in this thread | | | Date | Thu, 27 Nov 2008 12:13:43 +0200 | From | Avi Kivity <> | Subject | Re: [Lguest] [PATCH RFC/RFB] x86_64, i386: interrupt dispatch changes |
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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.
-- error compiling committee.c: too many arguments to function
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