{"id":12594,"date":"2020-03-24T09:14:06","date_gmt":"2020-03-24T17:14:06","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/vsnews\/?p=12594"},"modified":"2020-03-24T09:14:06","modified_gmt":"2020-03-24T17:14:06","slug":"aa7s8tc","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/vsnews\/akams-aa7s8tc\/","title":{"rendered":"More\u00a0Spectre Mitigations in MSVC"},"content":{"rendered":"<p class=\"\">In a previous blog post, Microsoft\u00a0<a href=\"https:\/\/devblogs.microsoft.com\/cppblog\/spectre-mitigations-in-msvc\/\">described the Spectre mitigations\u00a0<\/a>available under\u00a0<code>\/Qspectre<\/code>. These mitigations, while not significantly impacting performance, do not protect against all possible speculative load attacks, described in industry research as\u00a0<a href=\"https:\/\/lviattack.eu\/\" target=\"_blank\" rel=\"noopener noreferrer\">Load Value Injection<\/a>. We are now adding two new switches\u00a0<code>\/Qspectre-load<\/code>\u00a0and\u00a0<code>\/Qspectre-load-cf<\/code>\u00a0to provide a more complete mitigation of\u00a0<a href=\"https:\/\/spectreattack.com\/spectre.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Spectre attacks<\/a>\u00a0based on loads for customers. These switches are only available on x86 and x64 platforms.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In a previous blog post, Microsoft\u00a0described the Spectre mitigations\u00a0available under\u00a0\/Qspectre. These mitigations, while not significantly impacting performance, do not protect against all possible speculative load attacks, described in industry research as\u00a0Load Value Injection. We are now adding two new switches\u00a0\/Qspectre-load\u00a0and\u00a0\/Qspectre-load-cf\u00a0to provide a more complete mitigation of\u00a0Spectre attacks\u00a0based on loads for customers. These switches are only [&hellip;]<\/p>\n","protected":false},"author":18258,"featured_media":8227,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-12594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allskus"],"acf":[],"blog_post_summary":"<p>In a previous blog post, Microsoft\u00a0described the Spectre mitigations\u00a0available under\u00a0\/Qspectre. These mitigations, while not significantly impacting performance, do not protect against all possible speculative load attacks, described in industry research as\u00a0Load Value Injection. We are now adding two new switches\u00a0\/Qspectre-load\u00a0and\u00a0\/Qspectre-load-cf\u00a0to provide a more complete mitigation of\u00a0Spectre attacks\u00a0based on loads for customers. These switches are only [&hellip;]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/posts\/12594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/users\/18258"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/comments?post=12594"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/posts\/12594\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/media\/8227"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/media?parent=12594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/categories?post=12594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vsnews\/wp-json\/wp\/v2\/tags?post=12594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}