Luca Tettamanti wrote: > When the old value and new one are the same the emulator skips the > write; this is undesiderable when the destination is a MMIO area and the > write shall be performed regardless of the previous value. This > optimization breaks e.g. a Linux guest APIC compiled without > X86_GOOD_APIC. > > Remove the check and always perform the writeback stage in the > emulation. > >
Unfortunately, this kills Windows XP (first run with a guest crash, second with a host oops), so I reverted it. I'd guess some operation which doesn't need writeback ends up in the modified code. Previously, the check caused it to skip writeback, but now it writes back random memory, causing a crash. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
