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Linux 4.4 & 4.9 Kernels Get Back-Ported SWAPGS Protection

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  • #1

    Linux 4.4 & 4.9 Kernels Get Back-Ported SWAPGS Protection

    Phoronix: Linux 4.4 & 4.9 Kernels Get Back-Ported SWAPGS Protection

    Greg Kroah-Hartman issued the Linux 4.4.189 and Linux 4.9.189 LTS kernels on Sunday morning that address the new Spectre V1 "SWAPGS" variant mitigations...

    Linux 4.4 & 4.9 Kernels Get Back-Ported SWAPGS Protection - Phoronix
    http://www.phoronix.com/scan.php?page=news_item&px=Linux-4.4-4.9-SWAPGS-Kernel
    Phoronix, Linux Hardware Reviews, Linux hardware benchmarks, Linux server benchmarks, Linux benchmarking, Desktop Linux, Linux performance, Open Source graphics, Linux How To, Ubuntu benchmarks, Ubuntu hardware, Phoronix Test Suite
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  • #2
    Good thing we got all new cases covered, with mitigations=off. =)
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    • #3
      Originally posted by dungeon
      Blah that patch to exclude AMD seems does not work here




      Code:
      cat /sys/devices/system/cpu/vulnerabilities/spectre_v1
Mitigation: usercopy/swapgs barriers and __user pointer sanitization
      This is on AMD with 4.19 kernel, so where that flag is? This looks like to me as shit is enabled Seems this does not correctly exclude AMD or whatever
      How this? Because AMD is not affected with SWAPGS

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