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Re: [Qemu-devel] [PATCH] hw/arm/virt: Reject gic-version=host for non-KV

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] hw/arm/virt: Reject gic-version=host for non-KVM
Date: Thu, 26 May 2016 15:53:54 +0100

On 26 May 2016 at 15:46, Richard W.M. Jones <address@hidden> wrote:
> The problem with this is if I'm using TCG fallback mode, how
> can I specify the right gic-version?  ie:
>   -M virt,gic-version=host,accel=kvm:tcg
> Only qemu knows if KVM is going to be enabled.
> The same problem happens with '-cpu host' BTW.  I really want a "make
> it work" option, as I've said on several previous occasions on this
> list eg:
> https://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg04173.html

I agree that we really need to do better here (thinking about
the problem is on my todo list but generally other more pressing
issues intervene). I'd welcome suggestions for semantics which
(a) do what you want (b) are reasonably in line with what we do
on other host architectures (c) don't break existing command lines.
(I think those are the main requirements.)

In the meantime I think this patch is correct for what we
are currently trying to implement.

-- PMM

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