Re: [Qemu-devel] -cpu host (was Re: KVM call minutes for 2013-08-06)

[Peter Maydell]

On 8 August 2013 21:57, Christoffer Dall <address@hidden> wrote:
> I'm fine with having a discovery mechanism for the GIC and not for the
> CPU, if there's an implicit discovery mechanism for the CPU.  But are
> we sure there will not be cases where we want to know the list of
> available CPUs that the kernel can actually emulate on this host as
> opposed to "just use the best one".

I guess "telling the user in advance whether enabling kvm is
going to work" (either via -help output or via monitor to
tell libvirt about it) might want that, and for that matter
maybe kvmtool might want to present a list of available CPUs.

(I probably wouldn't implement the 'say if it's going to
work in -help' bit immediately though because QEMU's internal
structure makes it a little awkward. But if we might want
it it's probably better for the kernel API to be there
from the start.)

-- PMM