Re: [PATCH 06/15] KVM: x86/xen: latch long_mode when hypercall page is set up

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On 4 December 2020 18:38:05 GMT, Alexander Graf <graf@xxxxxxxxxx> wrote:
>On 04.12.20 02:18, David Woodhouse wrote:
>> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
>
>If the shared_info page was maintained by user space, you wouldn't need
>
>any of this, right?

That may be the case. But what we put in the shared_info page and in the vcpu_info is time keeping information which KVM has done for guests — from the kernel — for a very long time.

Again, you could make the argument that some of this stuff *could* be done — albeit less efficiently — form userspace.

But again, that ship sailed years ago.
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.




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