Messages in this thread | | | Subject | Re: [PATCH 1/7] KVM: userspace interface | From | Alan Cox <> | Date | Thu, 19 Oct 2006 21:36:40 +0100 |
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Ar Iau, 2006-10-19 am 13:49 -0500, ysgrifennodd Anthony Liguori: > ioctls are probably wrong here though. Ideally, you would want to be > able to support an SMP guest. This means you need to have two virtual > processors executing in kernel space. If you use ioctls, it forces you
Not really and in fact with qemu you'd want to halt a trap on the second virtual CPU until emulation was over if only to get I/O and other instruction ordering right. Thats not an argument that only that view should be supported of course.
> If you used a read/write interface, you could poll for any number of > processors and handle IO emulation in a single userspace thread (which > seems closer to how hardware really works anyway).
Agreed.
Alan
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