{"id":22,"date":"2005-04-04T00:19:13","date_gmt":"2005-04-03T22:19:13","guid":{"rendered":"http:\/\/blog.blackdown.de\/2005\/04\/04\/per_linux32-fixes-for-linuxppc64\/"},"modified":"2016-10-29T03:51:02","modified_gmt":"2016-10-29T01:51:02","slug":"per_linux32-fixes-for-linuxppc64","status":"publish","type":"post","link":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/","title":{"rendered":"PER_LINUX32 Fixes for Linux\/ppc64"},"content":{"rendered":"<p>I&#8217;ve tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic <a href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=279273\">fix<\/a> on ppc32\/ppc64 today. Rebuilding worked fine with older versions but this time it failed because the makefiles identified my G5 as an i386 box! The makefiles use <code>uname -m<\/code> to determine the CPU type, there&#8217;s no code to handle &#8216;ppc64&#8217; and the default is &#8216;x86&#8217;.<\/p>\n<p>As my old work-around (providing a <code>uname<\/code> command that returns &#8216;ppc&#8217;) didn&#8217;t work anymore, this forced me to look at the root cause of the problem.<\/p>\n<p>I&#8217;ve finally found two issues with the <code>PER_LINUX32<\/code> personality:<\/p>\n<ul>\n<li><code>uname(2)<\/code> didn&#8217;t respect <code>PER_LINUX32<\/code><\/li>\n<li>Child processes didn&#8217;t inherit <code>PER_LINUX32<\/code><\/li>\n<\/ul>\n<p>This <a href=\"\/static\/kernel\/per_linux32-2.6.12-rc1-mm4.patch\">patch<\/a> for 2.6.12-rc1-mm4 fixes both issues:<\/p>\n<pre>$ uname -m\r\nppc64\r\n$ linux32 uname -m\r\nppc\r\n$ linux32 sh -c &quot;uname -m&quot;\r\nppc<\/pre>\n<p>Without the patch all three commands return &#8216;ppc64&#8217;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked fine with older versions but this time it failed because the makefiles identified my G5 as an i386 box! The makefiles use uname -m to determine the CPU type, there&#8217;s no code<br \/>[&rarr; <a href=\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/\" class=\"more-link\">Read the rest of this entry<\/a>]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[2,12],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"description\" content=\"I&#039;ve tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PER_LINUX32 Fixes for Linux\/ppc64 \u2014 J\u00fcrgen Kreileder\" \/>\n<meta property=\"og:description\" content=\"I&#039;ve tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/\" \/>\n<meta property=\"og:site_name\" content=\"J\u00fcrgen Kreileder\" \/>\n<meta property=\"article:published_time\" content=\"2005-04-03T22:19:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-10-29T01:51:02+00:00\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"J\u00fcrgen Kreileder\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blackdown.de\/#website\",\"url\":\"https:\/\/blackdown.de\/\",\"name\":\"J\u00fcrgen Kreileder\",\"description\":\"Software Engineer and Consultant\",\"publisher\":{\"@id\":\"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blackdown.de\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#webpage\",\"url\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/\",\"name\":\"PER_LINUX32 Fixes for Linux\/ppc64 \u2014 J\u00fcrgen Kreileder\",\"isPartOf\":{\"@id\":\"https:\/\/blackdown.de\/#website\"},\"datePublished\":\"2005-04-03T22:19:13+00:00\",\"dateModified\":\"2016-10-29T01:51:02+00:00\",\"description\":\"I've tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked\",\"breadcrumb\":{\"@id\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"PER_LINUX32 Fixes for Linux\/ppc64\"}]},{\"@type\":\"Article\",\"@id\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#webpage\"},\"author\":{\"@id\":\"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0\"},\"headline\":\"PER_LINUX32 Fixes for Linux\/ppc64\",\"datePublished\":\"2005-04-03T22:19:13+00:00\",\"dateModified\":\"2016-10-29T01:51:02+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#webpage\"},\"wordCount\":126,\"publisher\":{\"@id\":\"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0\"},\"articleSection\":[\"Linux\",\"Linux Kernel\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0\",\"name\":\"J\u00fcrgen Kreileder\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/blackdown.de\/#personlogo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/ceaab9fc1ba3f50f30f855e2b924aca5?s=96&d=identicon&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/ceaab9fc1ba3f50f30f855e2b924aca5?s=96&d=identicon&r=g\",\"caption\":\"J\u00fcrgen Kreileder\"},\"logo\":{\"@id\":\"https:\/\/blackdown.de\/#personlogo\"},\"sameAs\":[\"https:\/\/blackdown.de\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"description":"I've tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/","og_locale":"en_US","og_type":"article","og_title":"PER_LINUX32 Fixes for Linux\/ppc64 \u2014 J\u00fcrgen Kreileder","og_description":"I've tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked","og_url":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/","og_site_name":"J\u00fcrgen Kreileder","article_published_time":"2005-04-03T22:19:13+00:00","article_modified_time":"2016-10-29T01:51:02+00:00","twitter_misc":{"Written by":"J\u00fcrgen Kreileder","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/blackdown.de\/#website","url":"https:\/\/blackdown.de\/","name":"J\u00fcrgen Kreileder","description":"Software Engineer and Consultant","publisher":{"@id":"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blackdown.de\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#webpage","url":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/","name":"PER_LINUX32 Fixes for Linux\/ppc64 \u2014 J\u00fcrgen Kreileder","isPartOf":{"@id":"https:\/\/blackdown.de\/#website"},"datePublished":"2005-04-03T22:19:13+00:00","dateModified":"2016-10-29T01:51:02+00:00","description":"I've tried to rebuild the latest Debian packages of Mozilla and Firefox with my jsarena pointer arithmetic fix on ppc32\/ppc64 today. Rebuilding worked","breadcrumb":{"@id":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"PER_LINUX32 Fixes for Linux\/ppc64"}]},{"@type":"Article","@id":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#article","isPartOf":{"@id":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#webpage"},"author":{"@id":"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0"},"headline":"PER_LINUX32 Fixes for Linux\/ppc64","datePublished":"2005-04-03T22:19:13+00:00","dateModified":"2016-10-29T01:51:02+00:00","mainEntityOfPage":{"@id":"https:\/\/blackdown.de\/articles\/per_linux32-fixes-for-linuxppc64\/#webpage"},"wordCount":126,"publisher":{"@id":"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0"},"articleSection":["Linux","Linux Kernel"],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/blackdown.de\/#\/schema\/person\/d169d9b7b1b84446d5bea93795076ec0","name":"J\u00fcrgen Kreileder","image":{"@type":"ImageObject","@id":"https:\/\/blackdown.de\/#personlogo","inLanguage":"en-US","url":"https:\/\/secure.gravatar.com\/avatar\/ceaab9fc1ba3f50f30f855e2b924aca5?s=96&d=identicon&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ceaab9fc1ba3f50f30f855e2b924aca5?s=96&d=identicon&r=g","caption":"J\u00fcrgen Kreileder"},"logo":{"@id":"https:\/\/blackdown.de\/#personlogo"},"sameAs":["https:\/\/blackdown.de\/"]}]}},"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/pmfBQ-m","_links":{"self":[{"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/posts\/22"}],"collection":[{"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/comments?post=22"}],"version-history":[{"count":1,"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/posts\/22\/revisions"}],"predecessor-version":[{"id":780,"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/posts\/22\/revisions\/780"}],"wp:attachment":[{"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/media?parent=22"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/categories?post=22"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blackdown.de\/wp-json\/wp\/v2\/tags?post=22"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}