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Kernel-5.4.57 Warning message

Posted: 04 Oct 2020, 08:25
by raja
It was about Intel Processors mitigation on MDS,SMT vulnerability. Directed to visit..

https://www.kernel.org/doc/html/latest/ ... n/mds.html

Subsequently, I added MDS=full,nosmt to boot parameter, as directed.

DMESG log below.

Code: Select all

[    0.133686] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[    0.133687] Spectre V2 : Mitigation: Full generic retpoline
[    0.133688] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[    0.133688] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    0.133689] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[    0.133690] Spectre V2 : User space: Mitigation: STIBP via seccomp and prctl
[    0.133691] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp
[    0.133693] SMT: disabled
[    0.133693] SRBDS: Vulnerable: No microcode
[    0.133694] MDS: Mitigation: Clear CPU buffers
[    0.133959] Freeing SMP alternatives memory: 12K
[    0.134489] smpboot: CPU0: Intel(R) Core(TM) i3-7100U CPU @ 2.40GHz (family: 0x6, model: 0x8e, stepping: 0x9)
[    0.134553] Performance Events: PEBS fmt3+, Skylake events, 32-deep LBR, full-width counters, Intel PMU driver.
[    0.134558] ... version:                4
[    0.134559] ... bit width:              48
[    0.134559] ... generic registers:      4
[    0.134560] ... value mask:             0000ffffffffffff
[    0.134561] ... max period:             00007fffffffffff
[    0.134561] ... fixed-purpose events:   3
[    0.134562] ... event mask:             000000070000000f
[    0.134595] rcu: Hierarchical SRCU implementation.
[    0.134647] smp: Bringing up secondary CPUs ...
[    0.134700] x86: Booting SMP configuration:
[    0.134701] .... node  #0, CPUs:      #1 #2 #3
[    0.139699] smp: Brought up 1 node, 2 CPUs
[    0.139701] smpboot: Max logical packages: 2
[    0.139702] smpboot: Total of 2 processors activated (9600.00 BogoMIPS)
Information to Porteus users.

Kernel-5.4.57 Warning message

Posted: 04 Oct 2020, 08:36
by Blaze
Probably time to update BIOS of your motherboard