The shortcomings of previous Rowhammer mitigations prevent their adoption in practice. Their implementations either need signi\ufb01cant amounts of fast memory, such as CAM or SRAM, or require changes across multiple hardware and software layers. Panopticon is a complete in-DRAM Rowhammer mitigation that is both inexpensive and, for DDR4, requires no changes to any hardware components other than DRAM. Panopticon uses a novel DRAM mat design to implement counters and the DRAM\u2019s row decoding logic to access the row\u2019s corresponding counter. Finally, for DDR4, Panopticon leverages ALERT n to stop a memory controller from issuing new DRAM commands whenever it needs time to refresh potential victim rows.<\/p>\n","protected":false},"excerpt":{"rendered":"
The shortcomings of previous Rowhammer mitigations prevent their adoption in practice. Their implementations either need signi\ufb01cant amounts of fast memory, such as CAM or SRAM, or require changes across multiple hardware and software layers. Panopticon is a complete in-DRAM Rowhammer mitigation that is both inexpensive and, for DDR4, requires no changes to any hardware components […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","footnotes":""},"msr-content-type":[3],"msr-research-highlight":[],"research-area":[13558,13547],"msr-publication-type":[193716],"msr-product-type":[],"msr-focus-area":[],"msr-platform":[],"msr-download-source":[],"msr-locale":[268875],"msr-post-option":[],"msr-field-of-study":[269481],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[261676],"msr-pillar":[],"class_list":["post-1112751","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-security-privacy-cryptography","msr-research-area-systems-and-networking","msr-locale-en_us","msr-field-of-study-memory-technology"],"msr_publishername":"","msr_edition":"","msr_affiliation":"","msr_published_date":"2021-6-1","msr_host":"","msr_duration":"","msr_version":"","msr_speaker":"","msr_other_contributors":"","msr_booktitle":"","msr_pages_string":"","msr_chapter":"","msr_isbn":"","msr_journal":"","msr_volume":"","msr_number":"","msr_editors":"","msr_series":"","msr_issue":"","msr_organization":"","msr_how_published":"","msr_notes":"","msr_highlight_text":"","msr_release_tracker_id":"","msr_original_fields_of_study":"","msr_download_urls":"","msr_external_url":"","msr_secondary_video_url":"","msr_longbiography":"","msr_microsoftintellectualproperty":1,"msr_main_download":"","msr_publicationurl":"","msr_doi":"","msr_publication_uploader":[{"type":"url","viewUrl":"false","id":"false","title":"https:\/\/stefansaroiu.t8k2.com\/publications\/dramsec\/2021\/panopticon.pdf","label_id":"243132","label":0}],"msr_related_uploader":"","msr_attachments":[],"msr-author-ordering":[{"type":"text","value":"Tanj Bennett","user_id":0,"rest_url":false},{"type":"user_nicename","value":"Stefan Saroiu","user_id":33716,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=Stefan Saroiu"},{"type":"user_nicename","value":"Alec Wolman","user_id":30925,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=Alec Wolman"},{"type":"user_nicename","value":"Lucian Cojocar","user_id":39718,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=Lucian Cojocar"}],"msr_impact_theme":["Trust"],"msr_research_lab":[199565],"msr_event":[],"msr_group":[],"msr_project":[1111488],"publication":[],"video":[],"download":[],"msr_publication_type":"inproceedings","related_content":{"projects":[{"ID":1111488,"post_title":"Project STEMA","post_name":"project-stema","post_type":"msr-project","post_date":"2024-12-11 17:04:24","post_modified":"2024-12-20 16:20:14","post_status":"publish","permalink":"https:\/\/www.microsoft.com\/en-us\/research\/project\/project-stema\/","post_excerpt":"STEMA: Secure, Trustworthy, and Enhanced Memory for Azure The mission of Project STEMA is to pursue memory technologies that provide increased security, trustworthiness, and performance to Microsoft Azure. 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