KVM In Linux 4.2 Adds Support For x86 Write Combining, SMM
The KVM x86 code in Linux 4.2 adds support for the System Management Mode, which is needed for supporting UEFI Secure Boot in guest VMs. As part of this comes KVM support for handling multiple address spaces.
The KVM x86 code for Linux 4.2 also adds support for write combining, support for virtualized performance counters on AMD, and various other changes. In the non-x86 world is VFIO integration for KVM on ARM, clean-ups and optimizations on IBM s390, and various other fixes and improvements.
More details on these Linux 4.2 KVM changes via the pull request.
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