Messages in this thread | | | From | tedheadster <> | Date | Fri, 2 Feb 2018 23:52:30 -0500 | Subject | [BUG] x86 : i486 reporting to be vulnerable to Meltdown/Spectre_V1/Spectre_V2 |
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I just tested the 4.15 kernel and it is reporting that my old i486 (non-cpuid capable) cpu is vulnerable to all three issues: Meltdown, Spectre V1, and Spectre V2.
I find this to be _unlikely_.
/sys/devices/system/cpu/vulnerabilities/* reports the following:
meltdown: "Vulnerable" spectre_v1: "Vulnerable" spectre_v2: "Vulnerable: Minimal generic ASM retpoline"
The output of dmesg includes:
"Spectre V2 mitigation: Vulnerable: Minimal generic ASM retpoline" "Spectre V2 mitigation: Filling RSB on context switch"
Also, /proc/cpuinfo reports the following:
cpuid level: -1 flags: fpu retpoline rsb_ctxsw bugs: cpu_meltdown spectre_v1 spectre_v2
I have the hardware to test on. Send me your patches.
- Matthew Whitehead
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