{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11960422","patent":{"patent_number":"US-11960422","title":"Direct memory access tracking for pass-through devices in virtualized environments","assignee":null,"inventors":[],"filing_date":"2019-03-28T00:00:00.000Z","publication_date":"2024-04-16T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":22,"abstract":"Systems, apparatuses and methods may provide for a frontend driver that notifies a hypervisor of a map request from a guest driver of a device, wherein the device is passed through to and directly controlled by a virtual machine, and wherein the map request is associated with an attempt of the device to access a guest memory page in a virtualized execution environment. The frontend driver may also determine whether the guest memory page is pinned and send a map hypercall to the hypervisor if the guest memory page is not pinned. Additionally, the hypervisor may determine that the guest memory page is pinned, determine, based on a direct memory access (DMA) bitmap, that an unmap request from the guest driver has been issued, and unpin the guest memory page."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Direct memory access tracking for pass-through devices in virtualized environments","description":"Systems, apparatuses and methods may provide for a frontend driver that notifies a hypervisor of a map request from a guest driver of a device, wherein the device is passed through to and directly con","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11960422","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11960422","citation_suggestion":"Patentable. \"Direct memory access tracking for pass-through devices in virtualized environments\" (US-11960422). https://patentable.app/patents/US-11960422","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11960422","json":"https://patentable.app/api/llm-context/US-11960422","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T12:46:52.990Z"}