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2016.December 5.(H) 07:39 időpontban Andrew Savchenko ezt írta: |
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> 3) Can some hardware features like Intel TSX be used to protect |
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> from such race conditions? |
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Just a sidenote on TSX: although it sounds procmising, I've been seeing |
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multiple reports on Intel disabling the feature on several processors by |
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microcode update due to various bugs since its debut. Not just some |
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Haswell and Broadwell, but also some Skylake prcoessors are involved as |
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well. |
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https://en.wikipedia.org/wiki/Transactional_Synchronization_Extensions |
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"In August 2014, Intel announced that a bug exists in the TSX |
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implementation on Haswell, Haswell-E, Haswell-EP and early Broadwell CPUs, |
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which resulted in disabling the TSX feature on affected CPUs via a |
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microcode update.[9][10][21] The bug was fixed in F-0 steppings of the |
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vPro-enabled Core M-5Y70 Broadwell CPU in November 2014.[22]" |
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https://www.reddit.com/r/hardware/comments/44k218/intel_disables_tsx_transactional_memory_again_in/ |
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BR: Dw. |
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-- |
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dr Tóth Attila, Radiológus, 06-20-825-8057 |
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Attila Toth MD, Radiologist, +36-20-825-8057 |
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