{"id":1236305,"date":"2025-03-03T10:00:22","date_gmt":"2025-03-03T15:00:22","guid":{"rendered":"https:\/\/www.prime-wow.com\/?p=1236305"},"modified":"2025-03-03T10:00:22","modified_gmt":"2025-03-03T15:00:22","slug":"guard-pages-for-file-backed-memory","status":"publish","type":"post","link":"https:\/\/www.prime-wow.com\/?p=1236305","title":{"rendered":"[$] Guard pages for file-backed memory"},"content":{"rendered":"<div>One of the many new features packed into the 6.13 kernel release was guard<br \/>\npages, a hardening mechanism that makes it possible to inject zero-access<br \/>\npages into a process&#8217;s address space in an efficient way.  That feature<br \/>\nonly supports anonymous (user-space data) pages, though.  To make guard<br \/>\npages more widely useful, Lorenzo Stoakes has put together <a href=\"https:\/\/lwn.net\/ml\/all\/cover.1739469950.git.lorenzo.stoakes@oracle.com\">a patch<br \/>\nset<\/a> enabling the feature for file-backed pages as well; in the process,<br \/>\nhe examined and resolved a long list of potential problems that extending<br \/>\nthe feature could encounter.  One potential problem was not on his list,<br \/>\nthough.<\/div>\n","protected":false},"excerpt":{"rendered":"<p>One of the many new features packed into the 6.13 kernel release was guard pages, a hardening mechanism that makes it possible to inject zero-access pages into a process&#8217;s address space in an efficient way. That feature only supports anonymous &hellip; <a href=\"https:\/\/www.prime-wow.com\/?p=1236305\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[72,116,110],"tags":[],"class_list":["post-1236305","post","type-post","status-publish","format-standard","hentry","category-linux","category-lwn-net","category-unfiltered-rss"],"_links":{"self":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/posts\/1236305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1236305"}],"version-history":[{"count":0,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=\/wp\/v2\/posts\/1236305\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1236305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1236305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.prime-wow.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1236305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}