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SubjectRe: [BUG] x86 : i486 reporting to be vulnerable to Meltdown/Spectre_V1/Spectre_V2
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On Tue, 2018-02-06 at 15:45 -0500, tedheadster wrote:
>
> If that is correct (and I might be wrong), then I am up to date and I
> am still getting the following in /proc/cpuinfo on my Pentium 4M i686:
>
> bugs  : cpu_meltdown spectre_v1 spectre_v2

That's expected for now. The CPUs we exempt are as follows:

static const __initdata struct x86_cpu_id cpu_no_speculation[] = {
{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_CEDARVIEW, X86_FEATURE_ANY },
{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_CLOVERVIEW, X86_FEATURE_ANY },
{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_LINCROFT, X86_FEATURE_ANY },
{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_PENWELL, X86_FEATURE_ANY },
{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_PINEVIEW, X86_FEATURE_ANY },
{ X86_VENDOR_CENTAUR, 5 },
{ X86_VENDOR_INTEL, 5 },
{ X86_VENDOR_NSC, 5 },
{ X86_VENDOR_ANY, 4 },
{}
};

Alan is going to improve that list, but your Pentium 4 isn't on it yet.

The bugs went away on the 486 though, right?[unhandled content-type:application/x-pkcs7-signature]
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