Re: [RFC KVM 18/27] kvm/isolation: function to copy page table entries for percpu buffer

[Andy Lutomirski]

On Mon, May 13, 2019 at 7:39 AM Alexandre Chartre
<alexandre.chartre@xxxxxxxxxx> wrote:
>
> pcpu_base_addr is already mapped to the KVM address space, but this
> represents the first percpu chunk. To access a per-cpu buffer not
> allocated in the first chunk, add a function which maps all cpu
> buffers corresponding to that per-cpu buffer.
>
> Also add function to clear page table entries for a percpu buffer.
>

This needs some kind of clarification so that readers can tell whether
you're trying to map all percpu memory or just map a specific
variable.  In either case, you're making a dubious assumption that
percpu memory contains no secrets.