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    SubjectRe: [RFC 00/10] Process-local memory allocations for hiding KVM secrets
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    On 6/17/19 11:50 AM, Nadav Amit wrote:
    >> The idea is that you have a per-cpu address space. Certain kernel
    >> virtual addresses would map to different physical address based on where
    >> you are running. Each of the physical addresses would be "owned" by a
    >> single CPU and would, by convention, never use a PGD that mapped an
    >> address unless that CPU that "owned" it.
    >>
    >> In that case, you never really invalidate those addresses.
    > I understand, but as I see it, this is not related directly to PCIDs.

    Yeah, the only link I was thinking of is that we can manage per-CPU PGDs
    in the same way that we manage PCIDs. Basically we can reuse a chunk of
    the software concept.

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