PATENT CLAIM ANALYSIS

Application Number: 15875112
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["718", "001000"]

Abstract:
A system, methods, and apparatus for using hypervisor trapping for protection against interrupts in virtual machine functions are disclosed. A system includes memory, one or more physical processors, a virtual machine executing on the one or more physical processors, and a hypervisor executing on the one or more physical processors. The hypervisor reads an interrupt data structure on the virtual machine. The hypervisor determines whether the interrupt data structure points to an alternate page view. Responsive to determining that the interrupt data structure points to an alternate page view, the hypervisor disables a virtual machine function.

Claim (Index 16):
A system of restricting access to memory resources by a virtual machine, the system comprising:\n a default page table storing a default page view, wherein the virtual machine executes with the default page view; an alternate page table storing an alternate page view; and a hypervisor executing on a processor to: activate a trap to the hypervisor prior to an execution of an instruction that loads an interrupt data structure on the virtual machine; read the interrupt data structure to determine that the interrupt data structure points to the alternate page view, which is different from the default page view and the alternate page view includes a reference to a memory location outside of a memory location of a virtual machine function; and disable the virtual machine function.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 86.0
- Lexical Diversity: 2.18367
- Patent Class: 718.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14603984', '14604003', '14604056', '14630181', '15055904']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4682011581932521
- 35 USC 102 Novelty (BERT): 0.5350161105708579
- Combined Prediction Score: 0.4748826534310127
- Mean Citation Score: 264.31856400000004
- Max Citation Score: 314.185
- Similarity Product: 258.21835488915445

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test