Intel Software Guard Extensionã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã‚’èªã‚€(1. SGX Foundation) - FPGA開発日記
CPU脆弱性ã«ã¤ã„ã¦ã®è«–文をèªã‚“ã§ã„ã‚‹ã¨å¿…ãšã¨è¨€ã£ã¦ã„ã„ã»ã©å‡ºã¦ãã‚‹Intel SGX(Software Guard Extension)。 ãªã‚“ã¨ãªã秘匿データを扱ã†ãŸã‚ã®Intelã®ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢æ©Ÿæ§‹ãªã‚“ã ã‚ã†ãªã¨æ€ã£ã¦ã„ãŸã‘ã©ã€ã‚ã¾ã‚ŠçŸ¥ã£ãŸã‹ã¶ã‚Šã‚’ã—ã¦ã„ã‚‹ã®ã‚‚よããªã„ã®ã§ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã‚’èªã‚“ã§ã¿ã‚‹ã“ã¨ã«ã—ãŸã€‚ å‚考ã«ã—ãŸã®ã¯ã€Intel® Software Guard Extensions Tutorial Series ã 。ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®è©³ç´°ã«ã¤ã„ã¦æ›¸ã„ã¦ã‚ã‚‹ã‚ã‘ã§ã¯ãªã„ãŒã€ä½¿ã„æ–¹ã«ã¤ã„ã¦ã„ã‚ã„ã‚書ã„ã¦ã‚ã‚‹ã®ã§åŸºç¤ŽçŸ¥è˜ã‚’å¾—ã‚‹ã®ã«ã¯ã‚ˆã•ãã†ã€‚ software.intel.com 長々ã¨æ›¸ã„ã¦ã„ã‚‹ãŒè¦ã™ã‚‹ã«ã€ SGXã¯ç§˜å¯†æƒ…å ±ã‚’æ‰±ã†ãŸã‚ã«ã‚¢ãƒ—リケーション階層内ã«ã€Œé£›ã³åœ°(enclave)ã€ã‚’作æˆã™ã‚‹ã€‚ã“ã®é£›ã³åœ°ã«ç§˜å¯†æƒ…å ±ã‚’æ ¼ç´ã—ã¦ç®¡ç†ã™ã‚‹ã€‚ enclaveã«å…¥ã‚Œã‚‹ã®ã¯ã€Intelã®å°‚用
Processor Trace を使ã£ã¦ãƒ‡ãƒãƒƒã‚°æ™‚ã«è©³ç´°ãªãƒˆãƒ¬ãƒ¼ã‚¹ã‚’å–å¾—ã™ã‚‹ - Fixstars Tech Blog /proc/cpuinfo
ã“ã®ãƒ–ãƒã‚°ã¯ã€æ ªå¼ä¼šç¤¾ãƒ•ã‚£ãƒƒã‚¯ã‚¹ã‚¿ãƒ¼ã‚ºã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãŒã€ã‚らゆるテーマã«ã¤ã„ã¦è‡ªç”±ã«æ›¸ã„ã¦ã„るブãƒã‚°ã§ã™ã€‚ Broadwell 世代ã‹ã‚‰ã€ã„ãã¤ã‹ã®CPUã§ã¯Processor Traceã¨å‘¼ã°ã‚Œã‚‹æ©Ÿèƒ½ãŒä»˜ã„ã¦ã„ã¾ã™ã€‚ç°¡å˜ã«ä½¿ã„ã‹ãŸã‚’説明ã—ã¾ã™ã€‚ Intel Processor Trace ãã‚Œãªã‚Šã®è¦æ¨¡ã®CPUã«ã¯ãƒ—ãƒã‚»ãƒƒã‚µå†…ã§ç™ºç”Ÿã—ãŸã‚¤ãƒ™ãƒ³ãƒˆã‚’åŽé›†ã™ã‚‹ä»•çµ„ã¿ãŒã‚ã‚Šã¾ã™ã€‚よã使ã†ã‚‚ã®ã ã¨ã€ãƒ‘フォーマンスカウンタã®ã‚¤ãƒ™ãƒ³ãƒˆç‰ã§ã™ã。 Haswell以å‰ã§ã¯ã€ã“れらã®ã‚¤ãƒ™ãƒ³ãƒˆã¯å‰²ã‚Šè¾¼ã¿ã‚’経由ã—ã¦åŽé›†ã•ã‚Œã¦ã„ã¾ã—ãŸã€‚ãŸã ã€å‰²ã‚Šè¾¼ã¿çµŒç”±ã ã¨ã€ãã‚Œãªã‚Šã«ã‚ªãƒ¼ãƒãƒ¼ãƒ˜ãƒƒãƒ‰ãŒå¤§ãããªã£ã¦ã—ã¾ã†ã®ã§ã€ å…¨ã¦ã®ã‚¤ãƒ™ãƒ³ãƒˆã‚’åŽé›†ã™ã‚‹ã“ã¨ã¯é›£ã—ãã€ã‚µãƒ³ãƒ—リングベースã®ã‚‚ã®ãŒä¸»æµã§ã—ãŸã€‚ Intel Processor Trace ã¯ã€ãƒ¡ãƒ¢ãƒªçµŒç”±ã§ã€CPU内ã®ã‚¤ãƒ™ãƒ³ãƒˆã‚’åŽé›†ã™ã‚‹ä»•çµ„ã¿ã§ã™ã€‚ ã“れを使ã†ã¨ã€ãƒ¡ãƒ¢ãƒªçµŒç”±ã§
Linux-Kernel Archive: Re: [RFC 09/10] x86/enter: Create macros to restrict/unrestrict Indirect Branch Speculation
Re: [RFC 09/10] x86/enter: Create macros to restrict/unrestrict Indirect Branch Speculation From: Linus Torvalds Date: Sun Jan 21 2018 - 16:36:05 EST Next message: Jes Sorensen: "Re: [PATCH] rtl8xxxu: Fix trailing semicolon" Previous message: Heiko Stübner: "Re: [PATCH 0/2] Input: auo-pixcir-ts: Adjustments for two function implementations" In reply to: David Woodhouse: "Re: [RFC 09/10] x86/enter:
Realsense D435ã‚’Macã§å‹•ã‹ã™ - Qiita
brew install libusb pkg-config brew install homebrew/versions/glfw3 brew install cmake git clone https://github.com/IntelRealSense/librealsense cd librealsense mkdir build && cd build cmake .. -DBUILD_EXAMPLES=true -DBUILD_WITH_OPENMP=false -DHWM_OVER_XU=false -G Xcode open librealsense2.xcodeproj XCodeãŒç«‹ã¡ä¸ŠãŒã‚‹ã®ã§ãƒ“ルドターゲットをrealsense-viewerã«ã™ã‚‹ã€‚ ã€è¿½è¨˜ã€‘以下ã¯ã™ã§ã«ã‚„ã‚‹å¿…è¦ã‚ã‚Šã¾ã›ã‚“。 以å‰ã¯ä»¥ä¸‹ã‚’やらãªã„ã¨å‹•ã‹ãªã„環境ãŒã‚ã£ãŸã®ã§ã™ãŒã€ã¡ã‚ƒã‚“ã¨å‹•ãよã†ã«ç›´ã—
Kernel-memory-leaking Intel processor design flaw forces Linux, Windows redesign
Kernel-memory-leaking Intel processor design flaw forces Linux, Windows redesign Final update A fundamental design flaw in Intel's processor chips has forced a significant redesign of the Linux and Windows kernels to defang the chip-level security bug. Programmers are scrambling to overhaul the open-source Linux kernel's virtual memory system. Meanwhile, Microsoft is expected to publicly introduce
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