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The CPUID with 0x16 leaf can report the CPU hz and it is faster. And this mechanism is widely used in Linux kernel.(native_calibrate_cpu). As this is not supported on APL, currently sos adds the cpu_khz callback in pv_cpu_ops to read the cpu frequency. This is quite hack. (In fact HV leverages the cpuid with 0x40000010 leaf). If it is emulated, the sos and guest os can use the cpuid to obtain the corresponding cpu_khz. Then the cpu_khz in pv_cpu_ops can be removed. V2: Simple the logic of adding unsupported cpuid level entry after the CPUID 0x16 is emulated. Initialize the vcpuid_entry explicitly with zero for the unsupported cpuid. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
Embedded-Hypervisor ################### This open source embedded hypervisor defines a software architecture for running multiple software subsystems managed securely on a consolidated system (by means of a virtual machine manager), and defines a reference framework Device Model implementation for devices emulation This embedded hypervisor is type-1 reference hypervisor, running directly on the system hardware. It can be used for building software defined cockpit (SDC) or In-Vehicle Experience (IVE) solutions running on Intel Architecture Apollo Lake platforms. As a reference implementation, it provides the basis for embedded hypervisor vendors to build solutions with an open source reference I/O mediation solution, and provides auto makers a reference software stack for SDC usage. This embedded hypervisor is able to support both Linux* and Android* as a Guest OS, managed by the hypervisor, where applications can run. This embedded hypervisor is a partitioning hypervisor reference stack, also suitable for non-automotive IoT & embedded device solutions. It will be addressing the gap that currently exists between datacenter hypervisors, hard partitioning hypervisors, and select industrial applications. Extending the scope of this open source embedded hypervisor relies on the involvement of community developers like you!