{"id":64289,"date":"2018-10-22T09:50:57","date_gmt":"2018-10-22T00:50:57","guid":{"rendered":"https:\/\/www.softantenna.com\/wp\/?p=64289"},"modified":"2018-10-22T09:50:57","modified_gmt":"2018-10-22T00:50:57","slug":"windows-10-19h1-retpoline","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/windows-10-19h1-retpoline\/","title":{"rendered":"Windows 10\u306e\u6b21\u671f\u5927\u578b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u306fSpectre\u306e\u6e1b\u901f\u3092\u8efd\u6e1b\u3059\u308bRetpoline\u30d1\u30c3\u30c1\u304c\u5c0e\u5165\u3055\u308c\u308b"},"content":{"rendered":"<p><img decoding=\"async\" style=\"display:block; margin-left:auto; margin-right:auto;\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2018\/01\/Is_20180110_100542.jpg\" alt=\"S 20180110 100542\" title=\"s_20180110_100542.jpg\" border=\"0\" width=\"1236\" height=\"770\" \/><\/p>\n<p>Windows 10\u306e\u6b21\u671f\u5927\u578b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c819H1\u306b\u306f\u3001Google\u304c\u958b\u767a\u3057\u305fSpectre Variant 2\u8106\u5f31\u6027\u306e\u7de9\u548c\u5bfe\u7b56\u300cRetpoline\u300d\u304c\u5c0e\u5165\u3055\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f(<a href=\"https:\/\/mspoweruser.com\/windows-10-19h1-will-reduce-the-impact-of-spectre-mitigation-to-noise-level\/\">MSPoweruser<\/a>\u3001<a href=\"https:\/\/tech.slashdot.org\/story\/18\/10\/21\/0831228\/windows-10-will-banish-spectre-slowdowns-with-googles-retpoline-patch\">slashdot<\/a>)\u3002<\/p>\n<p>Retpoline\u306f2018\u5e74\u521d\u982d\u306b\u767a\u898b\u3055\u308c\u305fCPU\u306e\u8106\u5f31\u6027\u300cSpectre Variant 2\u300d\u306b\u5bfe\u3059\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30d9\u30fc\u30b9\u306e\u7de9\u548c\u7b56\u3067\u3001\u6295\u6a5f\u7684\u306a\u5b9f\u884c\u3092\u5236\u9650\u3057\u3066CPU\u306b\u5bfe\u3059\u308b\u653b\u6483\u3092\u7de9\u548c\u3057\u3064\u3064\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u4e8b\u304c\u53ef\u80fd\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002Retpoline\u30d1\u30c3\u30c1\u306f<a href=\"https:\/\/access.redhat.com\/ja\/articles\/3316261\">RedHat<\/a>\u3084\u3001SUSE\u3001Oracle Linux 6\/7\u306a\u3069\u3067\u3059\u3067\u306b\u5c0e\u5165\u3055\u308c\u3066\u304a\u308a\u3001Windows 10\u3067\u30822019\u5e74\u306b\u516c\u958b\u4e88\u5b9a\u306eWindows 10\u306e\u5927\u578b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u300c19H1\u300d\u3067\u3001\u3053\u308c\u3089Linux\u306b\u7d9a\u304d\u540c\u69d8\u306e\u5bfe\u7b56\u304c\u5c0e\u5165\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Microsoft\u306e\u30ab\u30fc\u30cd\u30eb\u30a8\u30f3\u30b8\u30cb\u30a2Mehmet Iyigun\u6c0f\u306f\u300119H1\u3067Retpoline\u3092\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u3067Spectre v2\u5bfe\u7b56\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3092\"\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\"\u306b\u8efd\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u767a\u8a00\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"ja\">\n<p lang=\"en\" dir=\"ltr\">Yes, we have enabled retpoline by default in our 19H1 flights along with what we call &quot;import optimization&quot; to further reduce perf impact due to indirect calls in kernel-mode. Combined, these reduce the perf impact of Spectre v2 mitigations to noise-level for most scenarios. <a href=\"https:\/\/t.co\/CPlYeryV9K\">https:\/\/t.co\/CPlYeryV9K<\/a><\/p>\n<p>&mdash; Mehmet Iyigun (@mamyun) <a href=\"https:\/\/twitter.com\/mamyun\/status\/1052715532883877888?ref_src=twsrc%5Etfw\">2018\u5e7410\u670818\u65e5<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>Windows 10 19H1\u306f\u3001CPU\u306e\u8106\u5f31\u6027\u5bfe\u7b56\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4f4e\u4e0b\u3092\u611f\u3058\u3066\u3044\u305f\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u306f\u5f85\u671b\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Windows 10\u306e\u6b21\u671f\u5927\u578b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c819H1\u306b\u306f\u3001Google\u304c\u958b\u767a\u3057\u305fSpectre Variant 2\u8106\u5f31\u6027\u306e\u7de9\u548c\u5bfe\u7b56\u300cRetpoline\u300d\u304c\u5c0e\u5165\u3055\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f(MSPoweruser\u3001slashdo [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":64290,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[3298,2701],"class_list":["post-64289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-windows","tag-windows10"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/64289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/comments?post=64289"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/64289\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/64290"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=64289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=64289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=64289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}