{"id":247487,"date":"2026-05-13T05:30:00","date_gmt":"2026-05-13T09:30:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/05\/13\/arm-preparing-the-linux-kernel-for-128-bit-page-table-entries-feat_d128\/"},"modified":"2026-05-17T11:30:24","modified_gmt":"2026-05-17T15:30:24","slug":"arm-preparing-the-linux-kernel-for-128-bit-page-table-entries-feat_d128","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/05\/13\/arm-preparing-the-linux-kernel-for-128-bit-page-table-entries-feat_d128\/","title":{"rendered":"Arm Preparing The Linux Kernel For 128-bit Page Table Entries &#8220;FEAT_D128&#8221;"},"content":{"rendered":"<p><a href=\"https:\/\/www.phoronix.com\/news\/Arm-Linux-FEAT-D128-Patches\">Arm Preparing The Linux Kernel For 128-bit Page Table Entries &#8220;FEAT_D128&#8221;<\/a><\/p>\n<p><a href=\"https:\/\/www.phoronix.com\/news\/Arm-Linux-FEAT-D128-Patches\">https:\/\/www.phoronix.com\/news\/Arm-Linux-FEAT-D128-Patches<\/a><\/p>\n<p>Publish Date: <a href=\"publish_date]\">2026-05-13 05:30:00<\/a><\/p>\n<p>Source Domain: <a href=\"www.phoronix.com\">www.phoronix.com<\/a><\/p>\n<p>A new core infrastructure improvement for the Linux kernel on ARM being worked on is enabling 128-bit page table entries (PTEs) with FEAT_D128 as a new optional feature of Armv9.3 and later.<\/p>\n<p>FEAT_D128 allows selectively enabling VMSAv9-128 as a new translation system for handling 128 bit page table entries in order to support larger physical and virtual address memory ranges. Beyond the larger physical\/virtual memory addressing, FEAT_D128 also enables more room for additional MMU management feature bits for both hardware and software.<br \/>\n<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/www.phoronix.net\/image.php?id=ddr5-epyc-9004-genoa&#038;image=epyc9004_ddr5_1_med\" alt=\"DDR5 memory\"\/><\/p>\n<p>The current Linux kernel patches for Arm&#8217;s FEAT_D128 are under a request for comments (RFC) flag. There are also some known limitations such as KVM, Kernel Address Sanitizer, and other select features not currently being supported with FEAT_D128.<\/p>\n<p>Those interested in this 128-bit page table entries support for ARM can see the RFC patch series for all the details.<\/p>\n<p><a href=\"https:\/\/www.phoronix.com\/news\/Arm-Linux-FEAT-D128-Patches\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Arm Preparing The Linux Kernel For 128-bit Page Table Entries &#8220;FEAT_D128&#8221; https:\/\/www.phoronix.com\/news\/Arm-Linux-FEAT-D128-Patches Publish Date: 2026-05-13&#8230;<\/p>\n","protected":false},"author":1,"featured_media":247488,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/www.phoronix.net\/image.php?id=ddr5-epyc-9004-genoa&image=epyc9004_ddr5_1","fifu_image_alt":"","footnotes":""},"categories":[48],"tags":[71],"class_list":["post-247487","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","tag-linux"],"_links":{"self":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/247487"}],"collection":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/comments?post=247487"}],"version-history":[{"count":1,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/247487\/revisions"}],"predecessor-version":[{"id":247489,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/247487\/revisions\/247489"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media\/247488"}],"wp:attachment":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media?parent=247487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/categories?post=247487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/tags?post=247487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}