Hi, In v4.16 I already had support for BPB, IBRS_FW for spectre_v2 mitigation. But this went away in v17-rcx.
With 4.16 I have: jojo@fichte:~$ cd /sys/devices/system/cpu/vulnerabilities; grep ".*" * meltdown:Mitigation: PTI spectre_v1:Mitigation: __user pointer sanitization spectre_v2:Mitigation: Full generic retpoline, IBPB, IBRS_FW With 4.17-rcx I have: meltdown:Mitigation: PTI spectre_v1:Mitigation: __user pointer sanitization spectre_v2:Mitigation: Full generic retpoline Processor is vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz stepping : 3 microcode : 0x24 The problem goes away if I revert: d94a155 x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption Thanks, Jörg
