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内核日志中充斥着“读取 CPU”行

tag-icon • tag-icon kernel logging
内核日志中充斥着“读取 CPU”行

在我新设置的系统 16.04.3 LTS（GNU/Linux 4.13.0-32-generic x86_64）上，系统日志中充斥着神秘的内核read cpu消息。

这是什么原因造成的？怎样才能消除这种情况？

Feb 14 09:43:55 kernel: [  987.574630] sysctl_ibrs_enabled = 0, sysctl_ibpb_enabled = 0
Feb 14 09:43:55 kernel: [  987.574633] use_ibrs = 4, use_ibpb = 4
Feb 14 09:43:55 kernel: [  987.574634] read cpu 0 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574635] read cpu 1 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574636] read cpu 2 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574637] read cpu 3 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574638] read cpu 4 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574639] read cpu 5 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574639] read cpu 6 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574640] read cpu 7 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574641] read cpu 8 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574642] read cpu 9 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574643] read cpu 10 ibrs val 0
Feb 14 09:43:55 kernel: [  987.574644] read cpu 11 ibrs val 0

答案1

这里有一个启动板错误 -https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755627

很有可能很快就会修复。

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