Necrosoft
2008-Jun-23 08:29 UTC
[Xen-devel] Xen and AMD: VMExit on int 0x80 and 64bit case.
Hi I''m looking through xen-devel archive and I found an old mail (2007) wich speaks about "VMExit forcing" in AMD/HVM architecture for some "events". M. Williamson said: "It it possible to arrange for a VMEXIT to occur on int 0x80". I would ask you if you know an example or others informations witch may clarify this kind of trick. I think that this is not required for 64bit-Xen and 32bit/64bit PV-Guest because Xen must intercept all int 0x80 directly, right? In this cases I can hook this event only through ENTRY(int80_direct_trap) (x86_64/entry.S) procedure or there is another "high level procedure"? Thanks you very much! Bye Dario _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel