15 Change log • New Host Interface Networking implementations for Windows and Linux hosts with easier setup (replaces TUN/TAP on Linux and manual bridging on Windows) In addition, the following items were fixed and/or added: • VMM: significant performance improvements for VT-x (real mode execution) • VMM: support for hardware breakpoints (VT-x and AMD-V only bug #477) • VMM: VGA performance improvements for VT-x and AMD-V • VMM: Solaris and OpenSolaris guest performance improvements for AMD-V (Barcelona family CPUs only) • VMM: fixed guru meditation while running the Dr. Web virus scanner (software virtualiza- tion only bug #1439) • VMM: deactivate VT-x and AMD-V when the host machine goes into suspend mode reacti- vate when the host machine resumes (Windows, Mac OS X & Linux hosts bug #1660) • VMM: fixed guest hangs when restoring VT-x or AMD-V saved states/snapshots • VMM: fixed guru meditation when executing a one byte debug instruction (VT-x only bug #2617) • VMM: fixed guru meditation for PAE guests on non-PAE hosts (VT-x) • VMM: disallow mixing of software and hardware virtualization execution in general (bug #2404) • VMM: fixed black screen when booting OS/2 1.x (AMD-V only) • GUI: pause running VMs when the host machine goes into suspend mode (Windows & Mac OS X hosts) • GUI: resume previously paused VMs when the host machine resumes after suspend (Win- dows & Mac OS X hosts) • GUI: save the state of running or paused VMs when the host machine’s battery reaches critical level (Windows hosts) • GUI: properly restore the position of the selector window when running on the compiz window manager • GUI: properly restore the VM in seamless mode (2.0 regression) • GUI: warn user about non optimal memory settings • GUI: structure operating system list according to family and version for improved usability • GUI: predefined settings for QNX guests • IDE: improved ATAPI passthrough support • Networking: added support for up to 8 Ethernet adapters per VM • Networking: fixed issue where a VM could lose connectivity after a reboot • iSCSI: allow snapshot/diff creation using local VDI file • iSCSI: improved interoperability with iSCSI targets • Graphics: fixed handling of a guest video memory which is not a power of two (bug #2724) 227