Avi Kivity wrote: > Gerd Hoffmann wrote: >> Hi, >> >> I've just noticed that xenner doesn't work for 64bit xen guest kernels >> on my new shiny barcelona box. The VM crashes when trying to access the >> lapic. lapic setup is done before idt setup, register dump looks like >> init state, thus it most likely is a triple fault resetting the vcpu. >> Turning off npt fixes it. >> >> xenner maps the lapic to ffff820000000000 (64bit guests) or fe900000 >> (32bit guests). 32bit works fine even with npt enabled. >> >> host kernel is fedora 9 with kvm-69 modules. >> >> ideas anyone? > > Turn on logging in lapic.c. See if something turns up. > > If not, the page tables are probably set up incorrectly, but in a way > that kvm doesn't notice.
Figured meanwhile the instruction accessing the lapic register somehow beames me into my gpf handler. With a quite strange rsp value. Hmm. To be analyzed further after kvm forum I guess, unless someone has a bright idea ... cheers, Gerd -- http://kraxel.fedorapeople.org/xenner/ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
