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Peter Krempa f80a11c921 cpu_x86: Refactor storage of CPUID data to add support for KVM features
The CPUID functions were stored in multiple arrays according to a
specified prefix of those. This made it very hard to add another prefix
to store KVM CPUID features (0x40000000). Instead of hardcoding a third
array this patch changes the approach used:

The code is refactored to use a single array where the CPUID functions
are stored ordered by the cpuid function so that they don't depend on
the specific prefix and don't waste memory. The code is also less
complex using this approach. A trateoff to this is the change from O(N)
complexity to O(N^2) in x86DataAdd and x86DataSubtract. The rest of the
functions were already using O(N^2) algorithms.
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         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>
Description
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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