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    SubjectRe: /sys/devices/system/cpu/vulnerabilities/ doesn't show all known CPU vulnerabilities
    On Tue, 13 Aug 2019 23:21:15 +0200 Borislav Petkov wrote:

    > You have to consider that some of those are addressed by a single
    mitigation like MDS

    That could be clarified like:

    vulnerability1 - mitigation MDS
    vulnerability2 - mitigation MDS
    vulnerability3 - mitigation 3 (another mitigation)
    ...

    > the mitigation for others like lazy FPU restore is not even present
    > in /sys/devices/system/cpu/vulnerabilities/.

    Then it could be a file with content saying "No mitigation".

    > Also, depending on the CPU, some are not even affected.

    That could say "Not affected" (which AFAIK is the case for some cases).

    > So maintaining this in the kernel is unnecessary to say the least.

    Knowing that there is no mitigation or that a CPU is not affected is
    quite different from not knowing anything. So I don't see why you
    conclude that knowledge is unnecessary.

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