[SOLVED]Spectre v2: firmware did not set auxiliary control register

hominoid
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[SOLVED]Spectre v2: firmware did not set auxiliary control register

Unread post by hominoid » Tue May 07, 2019 1:00 am

I probably don't check dmesg as often as I should but I just noticed this ominous message. Is this a known issue in the kernel?

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[    0.043991] smp: Bringing up secondary CPUs ...
[    0.072372] CPU1: thread -1, cpu 1, socket 1, mpidr 80000101
[    0.096333] CPU2: thread -1, cpu 2, socket 1, mpidr 80000102
[    0.124324] CPU3: thread -1, cpu 3, socket 1, mpidr 80000103
[    0.152338] CPU4: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.152346] CPU4: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable
[    0.172321] CPU5: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.172328] CPU5: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable
[    0.180642] CPU6: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.180649] CPU6: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable
[    0.188628] CPU7: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.188635] CPU7: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable
[    0.188888] smp: Brought up 1 node, 8 CPUs
[    0.188934] SMP: Total of 8 processors activated (384.00 BogoMIPS).
[    0.188957] CPU: All CPU(s) started in HYP mode.
[    0.188975] CPU: Virtualization extensions available.
[    0.190796] devtmpfs: initialized 

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root@router:~# uname -a
Linux router 4.14.111-158 #1 SMP PREEMPT Tue Apr 16 12:26:31 -03 2019 armv7l armv7l armv7l GNU/Linux
EDIT: I see it's being worked on.
https://github.com/torvalds/linux/commi ... 29c396595f

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