Linux guests: calls to aio_read(3) and aio_write(3) may fail inside shared folders (bug #18805).Linux host: improve python version detection during rpm package creation, can change package dependencies and fix some installation problems.Linux host: support Linux 5.3, thank you Larry Finger (see also bug #18911).macOS host: fix crash of GUI VM process which showed up frequently with 10.15 Catalina (bug #18990).3D: fixed crash with some applications when using VBoxSVGA or VMSVGA graphics adapter (bug #18638).3D: fixed flicker and redraw issues when using VBoxSVGA or VMSVGA graphics adapter (bugs #18562, #18956).Network: fixed potential issue with interrupt signalling for network adapters in UEFI guests.USB: made device capturing for passthrough more accurate and reliable on Windows host.Audio: relaxed VRM / VRA (variable rate audio) bit checks to provide more compatibility for guests running ALSA setups with the AC'97 emulation.
Virtualization core: some fixes for systems with lots of processors.Virtualization core: fixed an invalid-guest state guru meditation in some rare circumstances on Intel hosts.Virtual machine definitions can therefore easily be ported to other computers. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use.
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