Scrub-commit state for memory region
A realm management unit (RMU) 20 manages ownership of memory regions by realms, each realm corresponding to at least a portion of a software process executed by processing circuitry. Memory access circuitry 26 enforces ownership rights for the regions, with the owner realm having a right to exclude...
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| creator | Parker, Jason Kovacevic, Djordje Evans, Matthew Lucien Stockwell, Gareth Rhys |
| description | A realm management unit (RMU) 20 manages ownership of memory regions by realms, each realm corresponding to at least a portion of a software process executed by processing circuitry. Memory access circuitry 26 enforces ownership rights for the regions, with the owner realm having a right to exclude other realms from accessing data stored within its owned region. The RMU 20 controls transitions of memory regions between region states, including an invalid state 220, a valid state 222, and a scrub-commit state 800 in which the memory region is allocated to an owner realm, inaccessible to that owner realm until a scrubbing process has been performed for the memory region to set each storage location of the region to a value uncorrelated with a previous value stored in the storage location, and prevented from being reallocated to a different owner realm. |
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The RMU 20 controls transitions of memory regions between region states, including an invalid state 220, a valid state 222, and a scrub-commit state 800 in which the memory region is allocated to an owner realm, inaccessible to that owner realm until a scrubbing process has been performed for the memory region to set each storage location of the region to a value uncorrelated with a previous value stored in the storage location, and prevented from being reallocated to a different owner realm.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220201&DB=EPODOC&CC=US&NR=11237957B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220201&DB=EPODOC&CC=US&NR=11237957B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Parker, Jason</creatorcontrib><creatorcontrib>Kovacevic, Djordje</creatorcontrib><creatorcontrib>Evans, Matthew Lucien</creatorcontrib><creatorcontrib>Stockwell, Gareth Rhys</creatorcontrib><title>Scrub-commit state for memory region</title><description>A realm management unit (RMU) 20 manages ownership of memory regions by realms, each realm corresponding to at least a portion of a software process executed by processing circuitry. 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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS |
| title | Scrub-commit state for memory region |
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