Meltdown & Spectre Variant 2 : microcode update

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Meltdown & Spectre Variant 2 : microcode update

Post by niksethi » 2018/07/27 10:53:44

I am having trouble applying recently released microcode updates provided by Intel to mitigate SPECTRE.

I'm running Centos 6.10 with kernel 4.9.112-32.el6.x86_64. Have installed microcode_ctl, but when trying to check current status of microcode with "dmesg | grep microcode", its showing nothing.
[root@amd-ucode]# dmesg | grep microcode

Also, trying to reload but /sys/devices/system/cpu/microcode/reload this path does't exist.

Please assist how to enable microcode and check its status.

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Re: Meltdown & Spectre Variant 2 : microcode update

Post by TrevorH » 2018/07/27 11:15:02

That's not a CentOS kernel. Where did you get it from? The current CentOS 6 kernel is kernel-2.6.32-754.2.1.el6.x86_64 and does have microcode reload support built in. It's also patched against meltdown/spectre.
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